fix reference margins

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/seedance_2p0/cost.rs

@@ -65,7 +65,6 @@ impl ArtcraftSeedance2p0CostState {
       let usd_cents = seedance_2p0_four_k_usd_cents(
         self.duration_seconds,
         self.batch_count,
-        self.has_video_reference,
       );
       return VideoGenerationCostEstimate {
         cost_in_credits: Some(usd_cents),
@@ -481,4 +480,74 @@ mod tests {
       .cost_in_usd_cents
       .unwrap()
   }
+
+  // ── Video reference deltas ──
+  //
+  // References price on the with-reference rate card; the delta must be positive at every resolution and duration.
+
+  mod video_reference_deltas {
+    use enums::common::generation::common_resolution::CommonResolution;
+
+    use super::super::ArtcraftSeedance2p0CostState;
+
+    #[test]
+    fn refs_cost_more_at_480p() {
+      assert_ref_delta(CommonResolution::FourEightyP, 5, 39, 45, 6);
+      assert_ref_delta(CommonResolution::FourEightyP, 10, 78, 89, 11);
+      assert_ref_delta(CommonResolution::FourEightyP, 15, 117, 133, 16);
+    }
+
+    #[test]
+    fn refs_cost_more_at_720p() {
+      assert_ref_delta(CommonResolution::SevenTwentyP, 5, 80, 111, 31);
+      assert_ref_delta(CommonResolution::SevenTwentyP, 10, 160, 221, 61);
+      assert_ref_delta(CommonResolution::SevenTwentyP, 15, 240, 331, 91);
+    }
+
+    #[test]
+    fn refs_cost_more_at_1080p() {
+      assert_ref_delta(CommonResolution::TenEightyP, 5, 233, 256, 23);
+      assert_ref_delta(CommonResolution::TenEightyP, 10, 466, 511, 45);
+      assert_ref_delta(CommonResolution::TenEightyP, 15, 699, 767, 68);
+    }
+
+    #[test]
+    fn refs_cost_more_at_4k() {
+      assert_ref_delta(CommonResolution::FourK, 5, 433, 569, 136);
+      assert_ref_delta(CommonResolution::FourK, 10, 866, 1138, 272);
+      assert_ref_delta(CommonResolution::FourK, 15, 1299, 1707, 408);
+    }
+
+    /// Price the same generation with and without a reference video; pin
+    /// both prices and the delta, in USD cents AND credits (credits equal
+    /// cents, and both must show references costing more).
+    fn assert_ref_delta(
+      resolution: CommonResolution,
+      duration_seconds: u16,
+      expected_no_ref: u64,
+      expected_with_ref: u64,
+      expected_delta: u64,
+    ) {
+      let no_ref = ArtcraftSeedance2p0CostState {
+        resolution, duration_seconds, batch_count: 1, has_video_reference: false,
+      }.estimate_cost();
+      let with_ref = ArtcraftSeedance2p0CostState {
+        resolution, duration_seconds, batch_count: 1, has_video_reference: true,
+      }.estimate_cost();
+
+      let no_ref_cents = no_ref.cost_in_usd_cents.unwrap();
+      let with_ref_cents = with_ref.cost_in_usd_cents.unwrap();
+      assert_eq!(no_ref_cents, expected_no_ref);
+      assert_eq!(with_ref_cents, expected_with_ref);
+      assert_eq!(with_ref_cents - no_ref_cents, expected_delta);
+      assert!(with_ref_cents > no_ref_cents, "references must cost more");
+
+      let no_ref_credits = no_ref.cost_in_credits.unwrap();
+      let with_ref_credits = with_ref.cost_in_credits.unwrap();
+      assert_eq!(no_ref_credits, expected_no_ref);
+      assert_eq!(with_ref_credits, expected_with_ref);
+      assert_eq!(with_ref_credits - no_ref_credits, expected_delta);
+    }
+  }
+
 }

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/seedance_2p0_bp/cost.rs

@@ -12,6 +12,19 @@ const CENTS_PER_SECOND_480P: f64 = 10.0;
 const CENTS_PER_SECOND_720P: f64 = 25.0;
 const CENTS_PER_SECOND_1080P: f64 = 50.0;
 
+/// USD cents per second, in hundredths of a cent, when one or more
+/// reference videos are attached. Held as integer hundredths so the math is
+/// exact; rounded up to whole cents once, after multiplying by
+/// duration × batch.
+///   480p:  10.20 ¢/s
+///   720p:  25.70 ¢/s
+///   1080p: 57.80 ¢/s
+///   4K:   113.80 ¢/s
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P: u64 = 1_020;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P: u64 = 2_570;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_1080P: u64 = 5_780;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_4K: u64 = 11_380;
+
 pub struct ArtcraftSeedance2p0BytePlusCostState {
   pub resolution: CommonResolution,
   pub duration_seconds: u16,
@@ -32,11 +45,23 @@ impl ArtcraftSeedance2p0BytePlusCostState {
   }
 
   pub fn estimate_cost(&self) -> VideoGenerationCostEstimate {
+    if self.has_video_reference {
+      let usd_cents = self.with_video_reference_usd_cents();
+      return VideoGenerationCostEstimate {
+        cost_in_credits: Some(usd_cents),
+        cost_in_usd_cents: Some(usd_cents),
+        is_free: false,
+        is_unlimited: false,
+        is_rate_limited: false,
+        has_watermark: false,
+        failures_are_refunded: None,
+      };
+    }
+
     if self.resolution == CommonResolution::FourK {
       let usd_cents = seedance_2p0_four_k_usd_cents(
         self.duration_seconds,
         self.batch_count,
-        self.has_video_reference,
       );
       return VideoGenerationCostEstimate {
         cost_in_credits: Some(usd_cents),
@@ -67,6 +92,22 @@ impl ArtcraftSeedance2p0BytePlusCostState {
       failures_are_refunded: None,
     }
   }
+
+  /// Price when one or more reference videos are attached.
+  fn with_video_reference_usd_cents(&self) -> u64 {
+    let centi_cents_per_second = match self.resolution {
+      CommonResolution::FourEightyP => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P,
+      CommonResolution::TenEightyP => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_1080P,
+      CommonResolution::FourK => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_4K,
+      // Everything else (including 720p) prices at 720p.
+      _ => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P,
+    };
+
+    let seconds = self.duration_seconds as u64 * self.batch_count as u64;
+
+    // Round up to whole cents.
+    (centi_cents_per_second * seconds).div_ceil(100)
+  }
 }
 
 #[cfg(test)]
@@ -187,10 +228,11 @@ mod tests {
 
     #[test]
     fn explicit_4k_with_video_reference() {
-      assert_eq!(artcraft_4k_cents(4, 1, true), 416);
-      assert_eq!(artcraft_4k_cents(5, 1, true), 519);
-      assert_eq!(artcraft_4k_cents(10, 1, true), 1038);
-      assert_eq!(artcraft_4k_cents(15, 1, true), 1557);
+      // 113.80 ¢/s with-reference card, rounded up to whole cents.
+      assert_eq!(artcraft_4k_cents(4, 1, true), 456);
+      assert_eq!(artcraft_4k_cents(5, 1, true), 569);
+      assert_eq!(artcraft_4k_cents(10, 1, true), 1138);
+      assert_eq!(artcraft_4k_cents(15, 1, true), 1707);
     }
   }
 
@@ -243,4 +285,74 @@ mod tests {
   fn cost_cents(resolution: Option<RouterResolution>, duration_seconds: u16, video_batch_count: u16) -> u64 {
     build_cost(resolution, duration_seconds, video_batch_count).cost_in_usd_cents.unwrap()
   }
+
+  // ── Video reference deltas ──
+  //
+  // References price on the with-reference rate card (10.20/25.70/57.80/113.80 ¢/s); the delta must be positive at every resolution and duration.
+
+  mod video_reference_deltas {
+    use enums::common::generation::common_resolution::CommonResolution;
+
+    use super::super::ArtcraftSeedance2p0BytePlusCostState;
+
+    #[test]
+    fn refs_cost_more_at_480p() {
+      assert_ref_delta(CommonResolution::FourEightyP, 5, 50, 51, 1);
+      assert_ref_delta(CommonResolution::FourEightyP, 10, 100, 102, 2);
+      assert_ref_delta(CommonResolution::FourEightyP, 15, 150, 153, 3);
+    }
+
+    #[test]
+    fn refs_cost_more_at_720p() {
+      assert_ref_delta(CommonResolution::SevenTwentyP, 5, 125, 129, 4);
+      assert_ref_delta(CommonResolution::SevenTwentyP, 10, 250, 257, 7);
+      assert_ref_delta(CommonResolution::SevenTwentyP, 15, 375, 386, 11);
+    }
+
+    #[test]
+    fn refs_cost_more_at_1080p() {
+      assert_ref_delta(CommonResolution::TenEightyP, 5, 250, 289, 39);
+      assert_ref_delta(CommonResolution::TenEightyP, 10, 500, 578, 78);
+      assert_ref_delta(CommonResolution::TenEightyP, 15, 750, 867, 117);
+    }
+
+    #[test]
+    fn refs_cost_more_at_4k() {
+      assert_ref_delta(CommonResolution::FourK, 5, 433, 569, 136);
+      assert_ref_delta(CommonResolution::FourK, 10, 866, 1138, 272);
+      assert_ref_delta(CommonResolution::FourK, 15, 1299, 1707, 408);
+    }
+
+    /// Price the same generation with and without a reference video; pin
+    /// both prices and the delta, in USD cents AND credits (credits equal
+    /// cents, and both must show references costing more).
+    fn assert_ref_delta(
+      resolution: CommonResolution,
+      duration_seconds: u16,
+      expected_no_ref: u64,
+      expected_with_ref: u64,
+      expected_delta: u64,
+    ) {
+      let no_ref = ArtcraftSeedance2p0BytePlusCostState {
+        resolution, duration_seconds, batch_count: 1, has_video_reference: false,
+      }.estimate_cost();
+      let with_ref = ArtcraftSeedance2p0BytePlusCostState {
+        resolution, duration_seconds, batch_count: 1, has_video_reference: true,
+      }.estimate_cost();
+
+      let no_ref_cents = no_ref.cost_in_usd_cents.unwrap();
+      let with_ref_cents = with_ref.cost_in_usd_cents.unwrap();
+      assert_eq!(no_ref_cents, expected_no_ref);
+      assert_eq!(with_ref_cents, expected_with_ref);
+      assert_eq!(with_ref_cents - no_ref_cents, expected_delta);
+      assert!(with_ref_cents > no_ref_cents, "references must cost more");
+
+      let no_ref_credits = no_ref.cost_in_credits.unwrap();
+      let with_ref_credits = with_ref.cost_in_credits.unwrap();
+      assert_eq!(no_ref_credits, expected_no_ref);
+      assert_eq!(with_ref_credits, expected_with_ref);
+      assert_eq!(with_ref_credits - no_ref_credits, expected_delta);
+    }
+  }
+
 }

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/seedance_2p0_bp_fast/cost.rs

@@ -9,10 +9,20 @@ use crate::generate::generate_video::providers::artcraft::seedance_2p0_bp_fast::
 const CENTS_PER_SECOND_480P: f64 = 9.0;
 const CENTS_PER_SECOND_720P: f64 = 20.0;
 
+/// USD cents per second, in hundredths of a cent, when one or more
+/// reference videos are attached. Held as integer hundredths so the math is
+/// exact; rounded up to whole cents once, after multiplying by
+/// duration × batch.
+///   480p:  9.65 ¢/s
+///   720p: 20.50 ¢/s
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P: u64 = 965;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P: u64 = 2_050;
+
 pub struct ArtcraftSeedance2p0BytePlusFastCostState {
   pub resolution: CommonResolution,
   pub duration_seconds: u16,
   pub batch_count: u16,
+  pub has_video_reference: bool,
 }
 
 impl ArtcraftSeedance2p0BytePlusFastCostState {
@@ -21,10 +31,26 @@ impl ArtcraftSeedance2p0BytePlusFastCostState {
       .unwrap_or(CommonResolution::SevenTwentyP);
     let duration_seconds = request.request.duration_seconds.unwrap_or(5);
     let batch_count = request.request.video_batch_count.unwrap_or(1);
-    Self { resolution, duration_seconds, batch_count }
+    let has_video_reference = request.request.reference_video_media_tokens
+      .as_ref()
+      .is_some_and(|tokens| !tokens.is_empty());
+    Self { resolution, duration_seconds, batch_count, has_video_reference }
   }
 
   pub fn estimate_cost(&self) -> VideoGenerationCostEstimate {
+    if self.has_video_reference {
+      let usd_cents = self.with_video_reference_usd_cents();
+      return VideoGenerationCostEstimate {
+        cost_in_credits: Some(usd_cents),
+        cost_in_usd_cents: Some(usd_cents),
+        is_free: false,
+        is_unlimited: false,
+        is_rate_limited: false,
+        has_watermark: false,
+        failures_are_refunded: None,
+      };
+    }
+
     let cents_per_second = match self.resolution {
       CommonResolution::FourEightyP => CENTS_PER_SECOND_480P,
       _ => CENTS_PER_SECOND_720P,
@@ -42,6 +68,20 @@ impl ArtcraftSeedance2p0BytePlusFastCostState {
       failures_are_refunded: None,
     }
   }
+
+  /// Price when one or more reference videos are attached.
+  fn with_video_reference_usd_cents(&self) -> u64 {
+    let centi_cents_per_second = match self.resolution {
+      CommonResolution::FourEightyP => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P,
+      // Everything else (including 720p) prices at 720p.
+      _ => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P,
+    };
+
+    let seconds = self.duration_seconds as u64 * self.batch_count as u64;
+
+    // Round up to whole cents.
+    (centi_cents_per_second * seconds).div_ceil(100)
+  }
 }
 
 #[cfg(test)]

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/seedance_2p0_bpu/cost.rs

@@ -12,6 +12,19 @@ const CENTS_PER_SECOND_480P: f64 = 10.0;
 const CENTS_PER_SECOND_720P: f64 = 25.0;
 const CENTS_PER_SECOND_1080P: f64 = 50.0;
 
+/// USD cents per second, in hundredths of a cent, when one or more
+/// reference videos are attached. Held as integer hundredths so the math is
+/// exact; rounded up to whole cents once, after multiplying by
+/// duration × batch.
+///   480p:  10.20 ¢/s
+///   720p:  25.70 ¢/s
+///   1080p: 57.80 ¢/s
+///   4K:   113.80 ¢/s
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P: u64 = 1_020;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P: u64 = 2_570;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_1080P: u64 = 5_780;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_4K: u64 = 11_380;
+
 pub struct ArtcraftSeedance2p0BytePlusUltraCostState {
   pub resolution: CommonResolution,
   pub duration_seconds: u16,
@@ -32,11 +45,23 @@ impl ArtcraftSeedance2p0BytePlusUltraCostState {
   }
 
   pub fn estimate_cost(&self) -> VideoGenerationCostEstimate {
+    if self.has_video_reference {
+      let usd_cents = self.with_video_reference_usd_cents();
+      return VideoGenerationCostEstimate {
+        cost_in_credits: Some(usd_cents),
+        cost_in_usd_cents: Some(usd_cents),
+        is_free: false,
+        is_unlimited: false,
+        is_rate_limited: false,
+        has_watermark: false,
+        failures_are_refunded: None,
+      };
+    }
+
     if self.resolution == CommonResolution::FourK {
       let usd_cents = seedance_2p0_four_k_usd_cents(
         self.duration_seconds,
         self.batch_count,
-        self.has_video_reference,
       );
       return VideoGenerationCostEstimate {
         cost_in_credits: Some(usd_cents),
@@ -67,6 +92,22 @@ impl ArtcraftSeedance2p0BytePlusUltraCostState {
       failures_are_refunded: None,
     }
   }
+
+  /// Price when one or more reference videos are attached.
+  fn with_video_reference_usd_cents(&self) -> u64 {
+    let centi_cents_per_second = match self.resolution {
+      CommonResolution::FourEightyP => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P,
+      CommonResolution::TenEightyP => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_1080P,
+      CommonResolution::FourK => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_4K,
+      // Everything else (including 720p) prices at 720p.
+      _ => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P,
+    };
+
+    let seconds = self.duration_seconds as u64 * self.batch_count as u64;
+
+    // Round up to whole cents.
+    (centi_cents_per_second * seconds).div_ceil(100)
+  }
 }
 
 #[cfg(test)]
@@ -187,10 +228,11 @@ mod tests {
 
     #[test]
     fn explicit_4k_with_video_reference() {
-      assert_eq!(artcraft_4k_cents(4, 1, true), 416);
-      assert_eq!(artcraft_4k_cents(5, 1, true), 519);
-      assert_eq!(artcraft_4k_cents(10, 1, true), 1038);
-      assert_eq!(artcraft_4k_cents(15, 1, true), 1557);
+      // 113.80 ¢/s with-reference card, rounded up to whole cents.
+      assert_eq!(artcraft_4k_cents(4, 1, true), 456);
+      assert_eq!(artcraft_4k_cents(5, 1, true), 569);
+      assert_eq!(artcraft_4k_cents(10, 1, true), 1138);
+      assert_eq!(artcraft_4k_cents(15, 1, true), 1707);
     }
   }
 
@@ -243,4 +285,74 @@ mod tests {
   fn cost_cents(resolution: Option<RouterResolution>, duration_seconds: u16, video_batch_count: u16) -> u64 {
     build_cost(resolution, duration_seconds, video_batch_count).cost_in_usd_cents.unwrap()
   }
+
+  // ── Video reference deltas ──
+  //
+  // References price on the with-reference rate card (10.20/25.70/57.80/113.80 ¢/s); the delta must be positive at every resolution and duration.
+
+  mod video_reference_deltas {
+    use enums::common::generation::common_resolution::CommonResolution;
+
+    use super::super::ArtcraftSeedance2p0BytePlusUltraCostState;
+
+    #[test]
+    fn refs_cost_more_at_480p() {
+      assert_ref_delta(CommonResolution::FourEightyP, 5, 50, 51, 1);
+      assert_ref_delta(CommonResolution::FourEightyP, 10, 100, 102, 2);
+      assert_ref_delta(CommonResolution::FourEightyP, 15, 150, 153, 3);
+    }
+
+    #[test]
+    fn refs_cost_more_at_720p() {
+      assert_ref_delta(CommonResolution::SevenTwentyP, 5, 125, 129, 4);
+      assert_ref_delta(CommonResolution::SevenTwentyP, 10, 250, 257, 7);
+      assert_ref_delta(CommonResolution::SevenTwentyP, 15, 375, 386, 11);
+    }
+
+    #[test]
+    fn refs_cost_more_at_1080p() {
+      assert_ref_delta(CommonResolution::TenEightyP, 5, 250, 289, 39);
+      assert_ref_delta(CommonResolution::TenEightyP, 10, 500, 578, 78);
+      assert_ref_delta(CommonResolution::TenEightyP, 15, 750, 867, 117);
+    }
+
+    #[test]
+    fn refs_cost_more_at_4k() {
+      assert_ref_delta(CommonResolution::FourK, 5, 433, 569, 136);
+      assert_ref_delta(CommonResolution::FourK, 10, 866, 1138, 272);
+      assert_ref_delta(CommonResolution::FourK, 15, 1299, 1707, 408);
+    }
+
+    /// Price the same generation with and without a reference video; pin
+    /// both prices and the delta, in USD cents AND credits (credits equal
+    /// cents, and both must show references costing more).
+    fn assert_ref_delta(
+      resolution: CommonResolution,
+      duration_seconds: u16,
+      expected_no_ref: u64,
+      expected_with_ref: u64,
+      expected_delta: u64,
+    ) {
+      let no_ref = ArtcraftSeedance2p0BytePlusUltraCostState {
+        resolution, duration_seconds, batch_count: 1, has_video_reference: false,
+      }.estimate_cost();
+      let with_ref = ArtcraftSeedance2p0BytePlusUltraCostState {
+        resolution, duration_seconds, batch_count: 1, has_video_reference: true,
+      }.estimate_cost();
+
+      let no_ref_cents = no_ref.cost_in_usd_cents.unwrap();
+      let with_ref_cents = with_ref.cost_in_usd_cents.unwrap();
+      assert_eq!(no_ref_cents, expected_no_ref);
+      assert_eq!(with_ref_cents, expected_with_ref);
+      assert_eq!(with_ref_cents - no_ref_cents, expected_delta);
+      assert!(with_ref_cents > no_ref_cents, "references must cost more");
+
+      let no_ref_credits = no_ref.cost_in_credits.unwrap();
+      let with_ref_credits = with_ref.cost_in_credits.unwrap();
+      assert_eq!(no_ref_credits, expected_no_ref);
+      assert_eq!(with_ref_credits, expected_with_ref);
+      assert_eq!(with_ref_credits - no_ref_credits, expected_delta);
+    }
+  }
+
 }

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/seedance_2p0_bpu_fast/cost.rs

@@ -9,10 +9,20 @@ use crate::generate::generate_video::providers::artcraft::seedance_2p0_bpu_fast:
 const CENTS_PER_SECOND_480P: f64 = 9.0;
 const CENTS_PER_SECOND_720P: f64 = 20.0;
 
+/// USD cents per second, in hundredths of a cent, when one or more
+/// reference videos are attached. Held as integer hundredths so the math is
+/// exact; rounded up to whole cents once, after multiplying by
+/// duration × batch.
+///   480p:  9.65 ¢/s
+///   720p: 20.50 ¢/s
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P: u64 = 965;
+const WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P: u64 = 2_050;
+
 pub struct ArtcraftSeedance2p0BytePlusUltraFastCostState {
   pub resolution: CommonResolution,
   pub duration_seconds: u16,
   pub batch_count: u16,
+  pub has_video_reference: bool,
 }
 
 impl ArtcraftSeedance2p0BytePlusUltraFastCostState {
@@ -21,10 +31,26 @@ impl ArtcraftSeedance2p0BytePlusUltraFastCostState {
       .unwrap_or(CommonResolution::SevenTwentyP);
     let duration_seconds = request.request.duration_seconds.unwrap_or(5);
     let batch_count = request.request.video_batch_count.unwrap_or(1);
-    Self { resolution, duration_seconds, batch_count }
+    let has_video_reference = request.request.reference_video_media_tokens
+      .as_ref()
+      .is_some_and(|tokens| !tokens.is_empty());
+    Self { resolution, duration_seconds, batch_count, has_video_reference }
   }
 
   pub fn estimate_cost(&self) -> VideoGenerationCostEstimate {
+    if self.has_video_reference {
+      let usd_cents = self.with_video_reference_usd_cents();
+      return VideoGenerationCostEstimate {
+        cost_in_credits: Some(usd_cents),
+        cost_in_usd_cents: Some(usd_cents),
+        is_free: false,
+        is_unlimited: false,
+        is_rate_limited: false,
+        has_watermark: false,
+        failures_are_refunded: None,
+      };
+    }
+
     let cents_per_second = match self.resolution {
       CommonResolution::FourEightyP => CENTS_PER_SECOND_480P,
       _ => CENTS_PER_SECOND_720P,
@@ -42,6 +68,20 @@ impl ArtcraftSeedance2p0BytePlusUltraFastCostState {
       failures_are_refunded: None,
     }
   }
+
+  /// Price when one or more reference videos are attached.
+  fn with_video_reference_usd_cents(&self) -> u64 {
+    let centi_cents_per_second = match self.resolution {
+      CommonResolution::FourEightyP => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_480P,
+      // Everything else (including 720p) prices at 720p.
+      _ => WITH_VIDEO_REFERENCE_CENTI_CENTS_PER_SECOND_720P,
+    };
+
+    let seconds = self.duration_seconds as u64 * self.batch_count as u64;
+
+    // Round up to whole cents.
+    (centi_cents_per_second * seconds).div_ceil(100)
+  }
 }
 
 #[cfg(test)]

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/seedance_common.rs

@@ -14,27 +14,16 @@ use kinovi_web_client::generate::video::generate_seedance_2p5::{
 /// 4K output price, in hundredths of a USD cent per second (86.60 ¢/s).
 const FOUR_K_CENTI_CENTS_PER_SECOND: u64 = 8660;
 
-/// Extra hundredths of a USD cent per second when a reference video is attached
-/// at 4K (17.20 ¢/s surcharge).
-const FOUR_K_VIDEO_REFERENCE_SURCHARGE_CENTI_CENTS_PER_SECOND: u64 = 1720;
-
-/// ArtCraft's price (USD cents) for Seedance 2.0 at 4K.
-///
-/// A reference video adds a per-second surcharge (4K with and without a video
-/// reference are priced differently). The cost scales with duration and batch
-/// count, rounded up to whole cents.
+/// ArtCraft's price (USD cents) for Seedance 2.0 at 4K with no reference
+/// videos attached. Each model prices reference videos through its own
+/// with-reference rate card. The cost scales with duration and batch count,
+/// rounded up to whole cents.
 pub fn seedance_2p0_four_k_usd_cents(
   duration_seconds: u16,
   batch_count: u16,
-  has_video_reference: bool,
 ) -> u64 {
-  let mut centi_cents_per_second = FOUR_K_CENTI_CENTS_PER_SECOND;
-  if has_video_reference {
-    centi_cents_per_second += FOUR_K_VIDEO_REFERENCE_SURCHARGE_CENTI_CENTS_PER_SECOND;
-  }
-
   let total_centi_cents =
-    centi_cents_per_second * duration_seconds as u64 * batch_count as u64;
+    FOUR_K_CENTI_CENTS_PER_SECOND * duration_seconds as u64 * batch_count as u64;
 
   // Round up to whole cents.
   total_centi_cents.div_ceil(100)
@@ -263,37 +252,17 @@ mod tests {
   use super::*;
 
   #[test]
-  fn four_k_without_video_reference() {
-    assert_eq!(seedance_2p0_four_k_usd_cents(4, 1, false), 347);
-    assert_eq!(seedance_2p0_four_k_usd_cents(5, 1, false), 433);
-    assert_eq!(seedance_2p0_four_k_usd_cents(10, 1, false), 866);
-    assert_eq!(seedance_2p0_four_k_usd_cents(15, 1, false), 1299);
-  }
-
-  #[test]
-  fn four_k_with_video_reference() {
-    assert_eq!(seedance_2p0_four_k_usd_cents(4, 1, true), 416);
-    assert_eq!(seedance_2p0_four_k_usd_cents(5, 1, true), 519);
-    assert_eq!(seedance_2p0_four_k_usd_cents(10, 1, true), 1038);
-    assert_eq!(seedance_2p0_four_k_usd_cents(15, 1, true), 1557);
-  }
-
-  #[test]
-  fn video_reference_always_costs_more() {
-    for &duration in &[4u16, 5, 10, 15] {
-      assert!(
-        seedance_2p0_four_k_usd_cents(duration, 1, true)
-          > seedance_2p0_four_k_usd_cents(duration, 1, false),
-        "video reference should cost more at {duration}s",
-      );
-    }
+  fn four_k_base_prices() {
+    assert_eq!(seedance_2p0_four_k_usd_cents(4, 1), 347);
+    assert_eq!(seedance_2p0_four_k_usd_cents(5, 1), 433);
+    assert_eq!(seedance_2p0_four_k_usd_cents(10, 1), 866);
+    assert_eq!(seedance_2p0_four_k_usd_cents(15, 1), 1299);
   }
 
   #[test]
   fn batch_count_multiplies() {
-    assert_eq!(seedance_2p0_four_k_usd_cents(5, 2, false), 866);
-    assert_eq!(seedance_2p0_four_k_usd_cents(5, 4, false), 1732);
-    assert_eq!(seedance_2p0_four_k_usd_cents(5, 2, true), 1038);
+    assert_eq!(seedance_2p0_four_k_usd_cents(5, 2), 866);
+    assert_eq!(seedance_2p0_four_k_usd_cents(5, 4), 1732);
   }
 
   // ── Seedance 2.0 Mini ──

crates/service/web/storyteller_web/src/http_server/endpoints/omni_gen/generate/video/tests/seedance_2p0/seedance_2p0_fast_tests.rs

@@ -12,7 +12,7 @@ use enums::common::generation::common_resolution::CommonResolution;
 use enums::common::generation::common_video_model::CommonVideoModel;
 
 use crate::http_server::endpoints::omni_gen::generate::video::tests::support::{
-  assert_generation_fails_and_charges_nothing, assert_reference_video_charge_then_refund,
+  assert_generation_fails_and_charges_nothing, assert_reference_video_charge_then_refund, assert_references_charge_more,
   assert_successful_generation_charges, assert_variant_charges_premium, Batch, CreditsDelta,
   ExpectedCredits, Seconds, TestHarness,
 };
@@ -311,6 +311,22 @@ mod seedance_2p0_fast {
 
   /// With video references Fast switches to its with-references rate card (480p 8.41, 720p 15.60 cents/s, ceil-rounded). Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0Fast, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
@@ -528,54 +544,54 @@ mod seedance_2p0_bp_fast {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(36)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(45)),
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(54)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(63)),
-      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(72)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(81)),
-      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(90)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(99)),
-      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(108)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(117)),
-      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(126)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(135)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(160)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(180)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(220)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(240)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(260)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(280)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(160)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(180)),
-      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(220)),
-      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(240)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(260)),
-      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(280)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(160)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(180)),
-      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(220)),
-      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(240)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(260)),
-      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(280)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(300)),
+      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(39)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(49)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(58)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(68)),
+      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(78)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(87)),
+      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(97)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(107)),
+      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(116)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(126)),
+      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(136)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(145)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(144)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(164)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(185)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(205)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(226)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(246)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(267)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(287)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(308)),
+      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(144)),
+      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(164)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(185)),
+      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(205)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(226)),
+      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(246)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(267)),
+      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(287)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(308)),
+      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(144)),
+      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(164)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(185)),
+      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(205)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(226)),
+      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(246)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(267)),
+      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(287)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(308)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -594,46 +610,46 @@ mod seedance_2p0_bp_fast {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(45)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(90)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(135)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(180)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(200)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(300)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(200)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(300)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(400)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(49)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(97)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(145)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(193)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(205)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(308)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(205)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(308)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(205)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(308)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(410)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -645,36 +661,52 @@ mod seedance_2p0_bp_fast {
 
   /// The BytePlus Fast rate card is flat: reference videos never change the price. Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0BytePlusFast, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(108)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(189)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(324)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(396)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(468)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(540)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(240)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(420)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(720)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(880)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1040)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1200)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(240)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(420)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(720)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(880)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(1040)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(1200)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(240)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(420)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(720)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(880)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(1040)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(1200)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(116)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(203)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(348)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(425)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(502)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(579)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(246)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(431)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(738)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(902)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1066)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1230)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(246)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(431)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(738)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(902)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(1066)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(1230)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(246)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(431)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(738)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(902)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(1066)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(1230)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -878,54 +910,54 @@ mod seedance_2p0_bpu_fast {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(36)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(45)),
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(54)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(63)),
-      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(72)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(81)),
-      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(90)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(99)),
-      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(108)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(117)),
-      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(126)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(135)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(160)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(180)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(220)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(240)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(260)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(280)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(160)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(180)),
-      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(220)),
-      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(240)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(260)),
-      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(280)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(160)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(180)),
-      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(220)),
-      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(240)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(260)),
-      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(280)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(300)),
+      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(39)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(49)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(58)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(68)),
+      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(78)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(87)),
+      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(97)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(107)),
+      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(116)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(126)),
+      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(136)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(145)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(144)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(164)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(185)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(205)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(226)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(246)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(267)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(287)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(308)),
+      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(144)),
+      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(164)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(185)),
+      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(205)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(226)),
+      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(246)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(267)),
+      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(287)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(308)),
+      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(144)),
+      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(164)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(185)),
+      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(205)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(226)),
+      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(246)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(267)),
+      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(287)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(308)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -944,46 +976,46 @@ mod seedance_2p0_bpu_fast {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(45)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(90)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(135)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(180)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(180)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(400)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(200)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(300)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(200)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(300)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(400)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(400)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(49)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(97)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(145)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(193)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(193)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(205)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(308)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(410)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(205)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(308)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(410)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(205)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(308)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(410)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(410)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -995,36 +1027,52 @@ mod seedance_2p0_bpu_fast {
 
   /// The BytePlus Fast rate card is flat: reference videos never change the price. Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0BytePlusUltraFast, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(108)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(189)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(324)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(396)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(468)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(540)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(240)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(420)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(720)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(880)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1040)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1200)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(240)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(420)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(720)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(880)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(1040)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(1200)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(240)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(420)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(720)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(880)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(1040)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(1200)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(116)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(203)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(348)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(425)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(502)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(579)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(246)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(431)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(738)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(902)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1066)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1230)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(246)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(431)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(738)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(902)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(1066)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(1230)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(246)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(431)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(738)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(902)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(1066)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(1230)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {

crates/service/web/storyteller_web/src/http_server/endpoints/omni_gen/generate/video/tests/seedance_2p0/seedance_2p0_mini_tests.rs

@@ -18,7 +18,7 @@ use enums::common::generation::common_resolution::CommonResolution;
 use enums::common::generation::common_video_model::CommonVideoModel;
 
 use crate::http_server::endpoints::omni_gen::generate::video::tests::support::{
-  assert_reference_video_charge_then_refund, assert_successful_generation_charges,
+  assert_reference_video_charge_then_refund, assert_references_charge_more, assert_successful_generation_charges,
   assert_variant_charges_premium, Batch, CreditsDelta, ExpectedCredits, Seconds, TestHarness,
 };
 
@@ -314,6 +314,22 @@ mod seedance_2p0_mini {
 
   /// With video references Mini adds its per-second surcharge before the single ceil-rounding. Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0Mini, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
@@ -649,6 +665,22 @@ mod seedance_2p0_bp_mini {
 
   /// With video references Mini adds its per-second surcharge before the single ceil-rounding. Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0BytePlusMini, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
@@ -982,6 +1014,22 @@ mod seedance_2p0_bpu_mini {
 
   /// With video references Mini adds its per-second surcharge before the single ceil-rounding. Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0BytePlusUltraMini, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {

crates/service/web/storyteller_web/src/http_server/endpoints/omni_gen/generate/video/tests/seedance_2p0/seedance_2p0_tests.rs

@@ -16,7 +16,7 @@ use enums::common::generation::common_resolution::CommonResolution;
 use enums::common::generation::common_video_model::CommonVideoModel;
 
 use crate::http_server::endpoints::omni_gen::generate::video::tests::support::{
-  assert_generation_fails_and_charges_nothing, assert_reference_video_charge_then_refund,
+  assert_generation_fails_and_charges_nothing, assert_reference_video_charge_then_refund, assert_references_charge_more,
   assert_successful_generation_charges, assert_variant_charges_premium, base_generate_request,
   Batch, CreditsDelta, ExpectedCredits, Seconds, TestHarness,
 };
@@ -313,6 +313,22 @@ mod seedance_2p0 {
 
   /// With video references Seedance 2.0 switches to its with-references rate card (480p 8.81, 720p 22.05, 1080p 51.10, 4K 113.80 cents/s, ceil-rounded). The unreachable fixture media fails the upload after billing, so the exact charge is asserted on the refunded ledger entry.
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP, CommonResolution::TenEightyP, CommonResolution::FourK] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
@@ -552,54 +568,54 @@ mod seedance_2p0_bp {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(40)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(50)),
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(60)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(70)),
-      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(90)),
-      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(110)),
-      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(130)),
-      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(150)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(125)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(150)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(175)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(225)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(250)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(275)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(325)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(350)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(375)),
-      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(250)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(350)),
-      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(450)),
-      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(500)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(550)),
-      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(600)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(650)),
-      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(700)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(750)),
-      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(416)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(519)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(623)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(727)),
-      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(831)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(935)),
-      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(1038)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(1142)),
-      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(1246)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(1350)),
-      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(1454)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(1557)),
+      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(41)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(51)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(62)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(72)),
+      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(92)),
+      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(102)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(113)),
+      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(133)),
+      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(143)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(153)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(129)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(155)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(180)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(206)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(232)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(257)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(283)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(309)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(335)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(360)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(386)),
+      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(232)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(289)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(347)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(405)),
+      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(463)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(521)),
+      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(578)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(636)),
+      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(694)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(752)),
+      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(810)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(867)),
+      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(456)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(569)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(683)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(797)),
+      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(911)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(1025)),
+      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(1138)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(1252)),
+      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(1366)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(1480)),
+      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(1594)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(1707)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -618,46 +634,46 @@ mod seedance_2p0_bp {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(50)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(100)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(150)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(125)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(250)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(375)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(500)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(250)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(500)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(750)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(1000)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(519)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(1038)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(1557)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(2076)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(51)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(102)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(153)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(204)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(129)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(257)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(386)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(514)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(289)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(578)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(867)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(1156)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(569)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(1138)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(1707)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(2276)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -669,36 +685,52 @@ mod seedance_2p0_bp {
 
   /// The BytePlus rate cards are flat below 4K: reference videos only change the 4K price (a 17.20 cents/s surcharge). Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP, CommonResolution::TenEightyP, CommonResolution::FourK] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0BytePlus, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(120)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(210)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(360)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(440)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(520)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(600)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(525)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(900)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(1100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1500)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(600)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(1050)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(1800)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(2200)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(2600)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(3000)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(1246)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(2180)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(3737)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(4568)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(5398)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(6228)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(123)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(215)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(368)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(449)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(531)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(612)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(309)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(540)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(926)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(1131)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1337)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1542)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(694)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(1214)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(2081)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(2544)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(3006)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(3468)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(1366)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(2390)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(4097)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(5008)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(5918)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(6828)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -901,54 +933,54 @@ mod seedance_2p0_bpu {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(40)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(50)),
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(60)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(70)),
-      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(80)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(90)),
-      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(110)),
-      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(120)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(130)),
-      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(140)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(150)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(125)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(150)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(175)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(225)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(250)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(275)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(325)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(350)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(375)),
-      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(200)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(250)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(300)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(350)),
-      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(400)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(450)),
-      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(500)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(550)),
-      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(600)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(650)),
-      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(700)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(750)),
-      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(416)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(519)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(623)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(727)),
-      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(831)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(935)),
-      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(1038)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(1142)),
-      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(1246)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(1350)),
-      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(1454)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(1557)),
+      (Some(CommonResolution::FourEightyP), Seconds(4), Batch(1), ExpectedCredits(41)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(51)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(1), ExpectedCredits(62)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(1), ExpectedCredits(72)),
+      (Some(CommonResolution::FourEightyP), Seconds(8), Batch(1), ExpectedCredits(82)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(1), ExpectedCredits(92)),
+      (Some(CommonResolution::FourEightyP), Seconds(10), Batch(1), ExpectedCredits(102)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(1), ExpectedCredits(113)),
+      (Some(CommonResolution::FourEightyP), Seconds(12), Batch(1), ExpectedCredits(123)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(1), ExpectedCredits(133)),
+      (Some(CommonResolution::FourEightyP), Seconds(14), Batch(1), ExpectedCredits(143)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(1), ExpectedCredits(153)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(4), Batch(1), ExpectedCredits(103)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(129)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(1), ExpectedCredits(155)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(1), ExpectedCredits(180)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(8), Batch(1), ExpectedCredits(206)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(1), ExpectedCredits(232)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(10), Batch(1), ExpectedCredits(257)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(1), ExpectedCredits(283)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(12), Batch(1), ExpectedCredits(309)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(1), ExpectedCredits(335)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(14), Batch(1), ExpectedCredits(360)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(1), ExpectedCredits(386)),
+      (Some(CommonResolution::TenEightyP), Seconds(4), Batch(1), ExpectedCredits(232)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(289)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(1), ExpectedCredits(347)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(1), ExpectedCredits(405)),
+      (Some(CommonResolution::TenEightyP), Seconds(8), Batch(1), ExpectedCredits(463)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(1), ExpectedCredits(521)),
+      (Some(CommonResolution::TenEightyP), Seconds(10), Batch(1), ExpectedCredits(578)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(1), ExpectedCredits(636)),
+      (Some(CommonResolution::TenEightyP), Seconds(12), Batch(1), ExpectedCredits(694)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(1), ExpectedCredits(752)),
+      (Some(CommonResolution::TenEightyP), Seconds(14), Batch(1), ExpectedCredits(810)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(1), ExpectedCredits(867)),
+      (Some(CommonResolution::FourK), Seconds(4), Batch(1), ExpectedCredits(456)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(569)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(1), ExpectedCredits(683)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(1), ExpectedCredits(797)),
+      (Some(CommonResolution::FourK), Seconds(8), Batch(1), ExpectedCredits(911)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(1), ExpectedCredits(1025)),
+      (Some(CommonResolution::FourK), Seconds(10), Batch(1), ExpectedCredits(1138)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(1), ExpectedCredits(1252)),
+      (Some(CommonResolution::FourK), Seconds(12), Batch(1), ExpectedCredits(1366)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(1), ExpectedCredits(1480)),
+      (Some(CommonResolution::FourK), Seconds(14), Batch(1), ExpectedCredits(1594)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(1), ExpectedCredits(1707)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -967,46 +999,46 @@ mod seedance_2p0_bpu {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(50)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(100)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(150)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(200)),
-      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(200)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(125)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(250)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(375)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(500)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(500)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(250)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(500)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(750)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(1000)),
-      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(1000)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(519)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(1038)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(1557)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(2076)),
-      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(2076)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(1), ExpectedCredits(51)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(2), ExpectedCredits(102)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(3), ExpectedCredits(153)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(4), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(5), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(6), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(7), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(8), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(9), ExpectedCredits(204)),
+      (Some(CommonResolution::FourEightyP), Seconds(5), Batch(10), ExpectedCredits(204)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(1), ExpectedCredits(129)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(2), ExpectedCredits(257)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(3), ExpectedCredits(386)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(4), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(5), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(6), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(7), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(8), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(9), ExpectedCredits(514)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(5), Batch(10), ExpectedCredits(514)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(1), ExpectedCredits(289)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(2), ExpectedCredits(578)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(3), ExpectedCredits(867)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(4), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(5), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(6), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(7), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(8), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(9), ExpectedCredits(1156)),
+      (Some(CommonResolution::TenEightyP), Seconds(5), Batch(10), ExpectedCredits(1156)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(1), ExpectedCredits(569)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(2), ExpectedCredits(1138)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(3), ExpectedCredits(1707)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(4), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(5), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(6), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(7), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(8), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(9), ExpectedCredits(2276)),
+      (Some(CommonResolution::FourK), Seconds(5), Batch(10), ExpectedCredits(2276)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {
@@ -1018,36 +1050,52 @@ mod seedance_2p0_bpu {
 
   /// The BytePlus rate cards are flat below 4K: reference videos only change the 4K price (a 17.20 cents/s surcharge). Charges are asserted on the refunded ledger entry (the fixture media is unreachable).
   /// Spot checks across duration x batch x resolution.
+  /// References must be CHARGED more than the identical no-reference
+  /// request, at every resolution and across durations.
+  #[tokio::test]
+  #[cfg_attr(feature = "skip_database_tests", ignore)]
+  async fn video_references_charge_more_than_no_references() {
+    let harness = TestHarness::create().await;
+
+    for resolution in [CommonResolution::FourEightyP, CommonResolution::SevenTwentyP, CommonResolution::TenEightyP, CommonResolution::FourK] {
+      for seconds in [5u16, 10, 15] {
+        assert_references_charge_more(
+          &harness, CommonVideoModel::Seedance2p0BytePlusUltra, Some(resolution), Seconds(seconds),
+        ).await;
+      }
+    }
+  }
+
   #[tokio::test]
   #[cfg_attr(feature = "skip_database_tests", ignore)]
   async fn video_references_charge_spot_checked_combinations() {
     let harness = TestHarness::create().await;
 
     let cases: &[(Option<CommonResolution>, Seconds, Batch, ExpectedCredits)] = &[
-      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(120)),
-      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(210)),
-      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(360)),
-      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(440)),
-      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(520)),
-      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(600)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(525)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(900)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(1100)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1300)),
-      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1500)),
-      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(600)),
-      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(1050)),
-      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(1800)),
-      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(2200)),
-      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(2600)),
-      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(3000)),
-      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(1246)),
-      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(2180)),
-      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(3737)),
-      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(4568)),
-      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(5398)),
-      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(6228)),
+      (Some(CommonResolution::FourEightyP), Seconds(6), Batch(2), ExpectedCredits(123)),
+      (Some(CommonResolution::FourEightyP), Seconds(7), Batch(3), ExpectedCredits(215)),
+      (Some(CommonResolution::FourEightyP), Seconds(9), Batch(4), ExpectedCredits(368)),
+      (Some(CommonResolution::FourEightyP), Seconds(11), Batch(5), ExpectedCredits(449)),
+      (Some(CommonResolution::FourEightyP), Seconds(13), Batch(8), ExpectedCredits(531)),
+      (Some(CommonResolution::FourEightyP), Seconds(15), Batch(10), ExpectedCredits(612)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(6), Batch(2), ExpectedCredits(309)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(7), Batch(3), ExpectedCredits(540)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(9), Batch(4), ExpectedCredits(926)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(11), Batch(5), ExpectedCredits(1131)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(13), Batch(8), ExpectedCredits(1337)),
+      (Some(CommonResolution::SevenTwentyP), Seconds(15), Batch(10), ExpectedCredits(1542)),
+      (Some(CommonResolution::TenEightyP), Seconds(6), Batch(2), ExpectedCredits(694)),
+      (Some(CommonResolution::TenEightyP), Seconds(7), Batch(3), ExpectedCredits(1214)),
+      (Some(CommonResolution::TenEightyP), Seconds(9), Batch(4), ExpectedCredits(2081)),
+      (Some(CommonResolution::TenEightyP), Seconds(11), Batch(5), ExpectedCredits(2544)),
+      (Some(CommonResolution::TenEightyP), Seconds(13), Batch(8), ExpectedCredits(3006)),
+      (Some(CommonResolution::TenEightyP), Seconds(15), Batch(10), ExpectedCredits(3468)),
+      (Some(CommonResolution::FourK), Seconds(6), Batch(2), ExpectedCredits(1366)),
+      (Some(CommonResolution::FourK), Seconds(7), Batch(3), ExpectedCredits(2390)),
+      (Some(CommonResolution::FourK), Seconds(9), Batch(4), ExpectedCredits(4097)),
+      (Some(CommonResolution::FourK), Seconds(11), Batch(5), ExpectedCredits(5008)),
+      (Some(CommonResolution::FourK), Seconds(13), Batch(8), ExpectedCredits(5918)),
+      (Some(CommonResolution::FourK), Seconds(15), Batch(10), ExpectedCredits(6828)),
     ];
 
     for (resolution, seconds, batch, expected) in cases {

crates/service/web/storyteller_web/src/http_server/endpoints/omni_gen/generate/video/tests/support.rs

@@ -4,6 +4,7 @@
 //! with dummy Actix HTTP requests as a fixture user.
 
 use std::collections::HashSet;
+use std::convert::TryFrom;
 use std::marker::PhantomData;
 use std::sync::Arc;
 use std::time::Duration;
@@ -794,6 +795,58 @@ pub async fn assert_generation_fails_and_charges_nothing(
   );
 }
 
+/// Run the same generation twice — once without and once with a reference
+/// video, as two independent fixture users — and assert the referenced
+/// generation is CHARGED strictly more credits. The no-reference generation
+/// succeeds outright; the referenced one uses an unreachable fixture (charge
+/// then refund), so its charge is read from the ledger debit entry.
+pub async fn assert_references_charge_more(
+  harness: &TestHarness,
+  model: CommonVideoModel,
+  resolution: Option<enums::common::generation::common_resolution::CommonResolution>,
+  Seconds(duration_seconds): Seconds,
+) {
+  let no_ref_user = harness.create_funded_user(STARTING_CREDITS).await;
+  let mut request = base_generate_request(model);
+  request.resolution = resolution;
+  request.duration_seconds = Some(duration_seconds);
+  let response = harness
+    .post_generate(&no_ref_user, request)
+    .await
+    .unwrap_or_else(|err| {
+      panic!("{:?} {:?} {}s: no-reference generation failed: {:?}", model, resolution, duration_seconds, err)
+    });
+  assert!(response.success);
+  let no_ref_debit = STARTING_CREDITS - harness.wallet_balance(&no_ref_user).await;
+
+  let ref_user = harness.create_funded_user(STARTING_CREDITS).await;
+  let video_token = mysql_testing::fixtures::media_files::create_test_video_media_file(
+    &harness.pool,
+    &ref_user.user_token,
+    Some(6_000),
+  )
+  .await
+  .expect("create video media file fixture");
+  let mut request = base_generate_request(model);
+  request.resolution = resolution;
+  request.duration_seconds = Some(duration_seconds);
+  request.reference_video_media_tokens = Some(vec![video_token]);
+  // The unreachable fixture fails after billing; the charge is in the ledger.
+  let _ = harness.post_generate(&ref_user, request).await;
+  let entries = harness.ledger_entries(&ref_user).await;
+  let ref_debit = entries
+    .iter()
+    .find(|entry| entry.credits_delta < 0)
+    .unwrap_or_else(|| panic!("{:?} {:?} {}s: no ledger debit for referenced generation", model, resolution, duration_seconds));
+  let ref_debit = u64::try_from(-ref_debit.credits_delta).expect("positive debit");
+
+  assert!(
+    ref_debit > no_ref_debit,
+    "{:?} {:?} {}s: references must charge more (ref {} vs no-ref {})",
+    model, resolution, duration_seconds, ref_debit, no_ref_debit,
+  );
+}
+
 /// Assert the variant model charges a premium over the base model: runs one
 /// generation on EACH model, asserts both exact charges, and that
 /// `variant == base + delta`. (A delta of 0 is allowed where ceil-rounding