artcraft router

crates/api_clients/artcraft/artcraft_router/src/api/router_video_model.rs

@@ -35,6 +35,9 @@ pub enum RouterVideoModel {
   #[serde(rename = "kling_3p0_pro")]
   Kling3p0Pro,
 
+  #[serde(rename = "minimax_h3")]
+  MinimaxH3,
+
   #[serde(rename = "seedance_1p0_lite")]
   Seedance10Lite,
 
@@ -149,4 +152,11 @@ mod tests {
     assert_serde_round_trip(RouterVideoModel::ViduQ3, "vidu_q3");
     assert_serde_round_trip(RouterVideoModel::ViduQ3Turbo, "vidu_q3_turbo");
   }
+
+  #[test]
+  fn minimax_h3_serializes() {
+    // NB: This string must match `CommonVideoModel` — the two enums convert
+    // via serde string round-trip in the omni handlers.
+    assert_serde_round_trip(RouterVideoModel::MinimaxH3, "minimax_h3");
+  }
 }

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/generate_video_request_builder.rs

@@ -43,6 +43,7 @@ use crate::generate::generate_video::providers::artcraft::veo_3_fast::build::bui
 use crate::generate::generate_video::providers::artcraft::veo_3p1::build::build_artcraft_veo_3p1;
 use crate::generate::generate_video::providers::artcraft::veo_3p1_fast::build::build_artcraft_veo_3p1_fast;
 use crate::generate::generate_video::providers::artcraft::veo_3p1_lite::build::build_artcraft_veo_3p1_lite;
+use crate::generate::generate_video::providers::artcraft::minimax_h3::build::build_artcraft_minimax_h3;
 use crate::generate::generate_video::providers::artcraft::vidu_q3::build::build_artcraft_vidu_q3;
 use crate::generate::generate_video::providers::artcraft::vidu_q3_turbo::build::build_artcraft_vidu_q3_turbo;
 use crate::generate::generate_video::providers::kinovi::happy_horse_1p0::build::build_kinovi_happy_horse_1p0;
@@ -68,6 +69,7 @@ use crate::generate::generate_video::providers::fal::veo_3_fast::build::build_fa
 use crate::generate::generate_video::providers::fal::veo_3p1::build::build_fal_veo_3p1;
 use crate::generate::generate_video::providers::fal::veo_3p1_fast::build::build_fal_veo_3p1_fast;
 use crate::generate::generate_video::providers::fal::veo_3p1_lite::build::build_fal_veo_3p1_lite;
+use crate::generate::generate_video::providers::fal::minimax_h3::build::build_fal_minimax_h3;
 use crate::generate::generate_video::providers::fal::vidu_q3::build::build_fal_vidu_q3;
 use crate::generate::generate_video::providers::fal::vidu_q3_turbo::build::build_fal_vidu_q3_turbo;
 use crate::generate::generate_video::providers::kinovi::seedance_2p0_fast::build::build_kinovi_seedance_2p0_fast;
@@ -180,6 +182,7 @@ impl GenerateVideoRequestBuilder {
       (RouterProvider::Artcraft, RouterVideoModel::Kling2p6Pro) => build_artcraft_kling_2_6_pro(self),
       (RouterProvider::Artcraft, RouterVideoModel::Kling3p0Pro) => build_artcraft_kling_3p0_pro(self),
       (RouterProvider::Artcraft, RouterVideoModel::Kling3p0Standard) => build_artcraft_kling_3p0_standard(self),
+      (RouterProvider::Artcraft, RouterVideoModel::MinimaxH3) => build_artcraft_minimax_h3(self),
       (RouterProvider::Artcraft, RouterVideoModel::Seedance2p0) => build_artcraft_seedance_2p0(self),
       (RouterProvider::Artcraft, RouterVideoModel::Seedance2p0Fast) => build_artcraft_seedance_2p0_fast(self),
       (RouterProvider::Artcraft, RouterVideoModel::Seedance2p0Ultra) => build_artcraft_seedance_2p0_u(self),
@@ -214,6 +217,7 @@ impl GenerateVideoRequestBuilder {
       (RouterProvider::Fal, RouterVideoModel::Kling2p6Pro) => build_fal_kling_2_6_pro(self),
       (RouterProvider::Fal, RouterVideoModel::Kling3p0Pro) => build_fal_kling_3p0_pro(self),
       (RouterProvider::Fal, RouterVideoModel::Kling3p0Standard) => build_fal_kling_3p0_standard(self),
+      (RouterProvider::Fal, RouterVideoModel::MinimaxH3) => build_fal_minimax_h3(self),
       (RouterProvider::Fal, RouterVideoModel::Seedance10Lite) => build_fal_seedance_1p0_lite(self),
       (RouterProvider::Fal, RouterVideoModel::Seedance1p5Pro) => build_fal_seedance_1p5_pro(self),
       (RouterProvider::Fal, RouterVideoModel::Sora2) => build_fal_sora_2(self),

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/minimax_h3/build.rs

@@ -0,0 +1,25 @@
+use enums::common::generation::common_video_model::CommonVideoModel as CommonVideoModelEnum;
+
+use crate::errors::artcraft_router_error::ArtcraftRouterError;
+use crate::generate::generate_video::generate_video_request_builder::GenerateVideoRequestBuilder;
+use crate::generate::generate_video::providers::artcraft::build_common::{
+  build_artcraft_omni_video_request, SupportedResolutions, UltraWideSupport,
+};
+use crate::generate::generate_video::providers::artcraft::minimax_h3::request::ArtcraftMinimaxH3RequestState;
+use crate::generate::generate_video::video_generation_draft_or_request::VideoGenerationDraftOrRequest;
+use crate::generate::generate_video::video_generation_request::VideoGenerationRequest;
+
+pub fn build_artcraft_minimax_h3(builder: GenerateVideoRequestBuilder) -> Result<VideoGenerationDraftOrRequest, ArtcraftRouterError> {
+  let state = build_artcraft_minimax_h3_state(builder)?;
+  Ok(VideoGenerationDraftOrRequest::Request(VideoGenerationRequest::ArtcraftMinimaxH3(state)))
+}
+
+pub(crate) fn build_artcraft_minimax_h3_state(builder: GenerateVideoRequestBuilder) -> Result<ArtcraftMinimaxH3RequestState, ArtcraftRouterError> {
+  let request = build_artcraft_omni_video_request(
+    builder,
+    CommonVideoModelEnum::MinimaxH3,
+    SupportedResolutions::Full,
+    UltraWideSupport::Supported,
+  )?;
+  Ok(ArtcraftMinimaxH3RequestState { request })
+}

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/minimax_h3/cost.rs

@@ -0,0 +1,158 @@
+use enums::common::generation::common_resolution::CommonResolution as CommonResolutionEnum;
+
+use crate::generate::generate_video::providers::artcraft::minimax_h3::request::ArtcraftMinimaxH3RequestState;
+use crate::generate::generate_video::video_generation_cost_estimate::VideoGenerationCostEstimate;
+
+/// Per-second rates in hundredths of a US cent.
+const LOW_RES_RATE_HUNDREDTH_CENTS_PER_SEC: u64 = 1_840;
+const HIGH_RES_RATE_HUNDREDTH_CENTS_PER_SEC: u64 = 2_990;
+
+/// The first 5 reference images are included; each additional image bills a
+/// flat fee (in hundredths of a US cent).
+const INCLUDED_REFERENCE_IMAGES: u64 = 5;
+const EXTRA_REFERENCE_IMAGE_HUNDREDTH_CENTS: u64 = 920;
+
+#[derive(Clone, Debug)]
+pub struct ArtcraftMinimaxH3CostState {
+  pub duration_seconds: u64,
+  pub is_2k: bool,
+  pub reference_image_count: u64,
+}
+
+impl ArtcraftMinimaxH3CostState {
+  pub fn from_request(request: &ArtcraftMinimaxH3RequestState) -> Self {
+    Self {
+      // MiniMax H3 defaults None → 5s.
+      duration_seconds: request.request.duration_seconds.map(u64::from).unwrap_or(5),
+      is_2k: is_2k(request.request.resolution),
+      reference_image_count: request.request.reference_image_media_tokens
+        .as_ref()
+        .map_or(0, |tokens| tokens.len() as u64),
+    }
+  }
+
+  pub fn estimate_cost(&self) -> VideoGenerationCostEstimate {
+    let rate = if self.is_2k {
+      HIGH_RES_RATE_HUNDREDTH_CENTS_PER_SEC
+    } else {
+      LOW_RES_RATE_HUNDREDTH_CENTS_PER_SEC
+    };
+    let extra_images = self.reference_image_count.saturating_sub(INCLUDED_REFERENCE_IMAGES);
+    // Round up to the next whole cent.
+    let cost_in_usd_cents =
+      (rate * self.duration_seconds + extra_images * EXTRA_REFERENCE_IMAGE_HUNDREDTH_CENTS)
+        .div_ceil(100);
+
+    VideoGenerationCostEstimate {
+      cost_in_credits: Some(cost_in_usd_cents),
+      cost_in_usd_cents: Some(cost_in_usd_cents),
+      is_free: false,
+      is_unlimited: false,
+      is_rate_limited: false,
+      has_watermark: false,
+      failures_are_refunded: None,
+    }
+  }
+}
+
+/// MiniMax H3 offers 768P and 2K output; 1080p and above land on the 2K tier,
+/// while 720p and below render at 768P. The default (unset) resolution is 2K.
+fn is_2k(resolution: Option<CommonResolutionEnum>) -> bool {
+  match resolution {
+    None => true, // defaults to 2K
+    Some(CommonResolutionEnum::TenEightyP)
+    | Some(CommonResolutionEnum::OneK)
+    | Some(CommonResolutionEnum::TwoK)
+    | Some(CommonResolutionEnum::ThreeK)
+    | Some(CommonResolutionEnum::FourK) => true,
+    Some(CommonResolutionEnum::HalfK)
+    | Some(CommonResolutionEnum::FourEightyP)
+    | Some(CommonResolutionEnum::SevenTwentyP) => false,
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use enums::common::generation::common_resolution::CommonResolution as CommonResolutionEnum;
+  use tokens::tokens::media_files::MediaFileToken;
+
+  use crate::api::image_list_ref::ImageListRef;
+  use crate::api::router_provider::RouterProvider;
+  use crate::api::router_resolution::RouterResolution;
+  use crate::api::router_video_model::RouterVideoModel;
+  use crate::generate::generate_video::generate_video_request_builder::GenerateVideoRequestBuilder;
+  use crate::generate::generate_video::providers::artcraft::minimax_h3::build::build_artcraft_minimax_h3_state;
+  use crate::generate::generate_video::providers::artcraft::minimax_h3::cost::ArtcraftMinimaxH3CostState;
+
+  #[test]
+  fn default_resolution_5s_is_150() { assert_eq!(cost_cents(Some(5), None, 0), 150); }
+
+  #[test]
+  fn default_duration_is_5s() { assert_eq!(cost_cents(None, None, 0), 150); }
+
+  #[test]
+  fn low_res_5s_is_92() { assert_eq!(cost_cents(Some(5), Some(RouterResolution::SevenTwentyP), 0), 92); }
+
+  #[test]
+  fn four_eighty_p_lands_on_low_tier() {
+    assert_eq!(cost_cents(Some(5), Some(RouterResolution::FourEightyP), 0), 92);
+  }
+
+  #[test]
+  fn low_res_15s_is_276() { assert_eq!(cost_cents(Some(15), Some(RouterResolution::SevenTwentyP), 0), 276); }
+
+  #[test]
+  fn high_res_10s_is_299() { assert_eq!(cost_cents(Some(10), Some(RouterResolution::TenEightyP), 0), 299); }
+
+  #[test]
+  fn odd_duration_rounds_up_to_whole_cents() {
+    // 7s high res: 2990 × 7 = 20930 hundredth-cents → 210 cents.
+    assert_eq!(cost_cents(Some(7), None, 0), 210);
+  }
+
+  #[test]
+  fn five_reference_images_are_included() {
+    assert_eq!(cost_cents(Some(5), None, 5), cost_cents(Some(5), None, 0));
+  }
+
+  #[test]
+  fn nine_reference_images_add_the_extra_image_fee() {
+    // 2990 × 5 + 4 × 920 = 18630 hundredth-cents → 187 cents.
+    assert_eq!(cost_cents(Some(5), None, 9), 187);
+  }
+
+  #[test]
+  fn resolution_classifier_defaults_2k() {
+    assert!(super::is_2k(None));
+    assert!(super::is_2k(Some(CommonResolutionEnum::TenEightyP)));
+    assert!(!super::is_2k(Some(CommonResolutionEnum::SevenTwentyP)));
+    assert!(!super::is_2k(Some(CommonResolutionEnum::FourEightyP)));
+  }
+
+  fn cost_cents(
+    duration_seconds: Option<u16>,
+    resolution: Option<RouterResolution>,
+    reference_image_count: usize,
+  ) -> u64 {
+    let reference_images = if reference_image_count == 0 {
+      None
+    } else {
+      Some(ImageListRef::MediaFileTokens(
+        (0..reference_image_count)
+          .map(|i| MediaFileToken::new(format!("m_test_{i}")))
+          .collect(),
+      ))
+    };
+    let b = GenerateVideoRequestBuilder {
+      model: RouterVideoModel::MinimaxH3,
+      provider: RouterProvider::Artcraft,
+      prompt: Some("test".to_string()),
+      duration_seconds,
+      resolution,
+      reference_images,
+      ..Default::default()
+    };
+    let state = build_artcraft_minimax_h3_state(b).unwrap();
+    ArtcraftMinimaxH3CostState::from_request(&state).estimate_cost().cost_in_usd_cents.unwrap()
+  }
+}

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/minimax_h3/mod.rs

@@ -0,0 +1,3 @@
+pub mod build;
+pub mod cost;
+pub mod request;

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/artcraft/minimax_h3/request.rs

@@ -0,0 +1,117 @@
+use artcraft_api_defs::omni_gen::cost_and_generate_requests::omni_gen_video_cost_and_generate_request::OmniGenVideoCostAndGenerateRequest;
+
+use crate::client::router_artcraft_client::RouterArtcraftClient;
+use crate::errors::artcraft_router_error::ArtcraftRouterError;
+use crate::generate::generate_video::generate_video_response::GenerateVideoResponse;
+use crate::generate::generate_video::providers::artcraft::request_common::send_artcraft_omni_video_request;
+
+#[derive(Clone, Debug)]
+pub struct ArtcraftMinimaxH3RequestState {
+  pub request: OmniGenVideoCostAndGenerateRequest,
+}
+
+impl ArtcraftMinimaxH3RequestState {
+  pub async fn send(&self, client: &RouterArtcraftClient) -> Result<GenerateVideoResponse, ArtcraftRouterError> {
+    send_artcraft_omni_video_request(&self.request, client).await
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use tokens::tokens::media_files::MediaFileToken;
+
+  use artcraft_client::credentials::storyteller_credential_set::StorytellerCredentialSet;
+  use artcraft_client::utils::api_host::ApiHost;
+  use test_data::web::image_media_tokens::JUNO_AT_LAKE_PRODUCTION_MEDIA_TOKEN;
+
+  use crate::api::image_list_ref::ImageListRef;
+  use crate::api::image_ref::ImageRef;
+  use crate::api::router_aspect_ratio::RouterAspectRatio;
+  use crate::api::router_provider::RouterProvider;
+  use crate::api::router_video_model::RouterVideoModel;
+  use crate::client::router_artcraft_client::RouterArtcraftClient;
+  use crate::client::router_client::RouterClient;
+  use crate::generate::generate_video::generate_video_request_builder::GenerateVideoRequestBuilder;
+  use crate::generate::generate_video::generate_video_response::GenerateVideoResponse;
+  use crate::generate::generate_video::video_generation_draft_or_request::VideoGenerationDraftOrRequest;
+
+  #[tokio::test]
+  #[ignore] // sends a real generation to the Artcraft backend, incurs cost
+  async fn text_to_video() {
+    let response = run_pipeline(GenerateVideoRequestBuilder {
+      prompt: Some("A red kite soaring over coastal cliffs, cinematic.".to_string()),
+      aspect_ratio: Some(RouterAspectRatio::WideSixteenByNine),
+      ..artcraft_builder()
+    }).await;
+    assert!(matches!(response, GenerateVideoResponse::Artcraft(_)));
+    assert_eq!(1, 2, "Inspect output above");
+  }
+
+  #[tokio::test]
+  #[ignore] // sends a real generation to the Artcraft backend, incurs cost
+  async fn keyframe_start_frame() {
+    let response = run_pipeline(GenerateVideoRequestBuilder {
+      prompt: Some("The dog stands up and walks toward the lake.".to_string()),
+      start_frame: Some(ImageRef::MediaFileToken(MediaFileToken::new(JUNO_AT_LAKE_PRODUCTION_MEDIA_TOKEN.to_string()))),
+      ..artcraft_builder()
+    }).await;
+    assert!(matches!(response, GenerateVideoResponse::Artcraft(_)));
+    assert_eq!(1, 2, "Inspect output above");
+  }
+
+  #[tokio::test]
+  #[ignore] // sends a real generation to the Artcraft backend, incurs cost
+  async fn reference_images_to_video() {
+    let response = run_pipeline(GenerateVideoRequestBuilder {
+      prompt: Some("Image 1 is the dog. The dog explores a mossy forest clearing.".to_string()),
+      reference_images: Some(ImageListRef::MediaFileTokens(vec![MediaFileToken::new(JUNO_AT_LAKE_PRODUCTION_MEDIA_TOKEN.to_string())])),
+      ..artcraft_builder()
+    }).await;
+    assert!(matches!(response, GenerateVideoResponse::Artcraft(_)));
+    assert_eq!(1, 2, "Inspect output above");
+  }
+
+  // ── Helpers ──
+
+  fn artcraft_builder() -> GenerateVideoRequestBuilder {
+    GenerateVideoRequestBuilder {
+      model: RouterVideoModel::MinimaxH3,
+      provider: RouterProvider::Artcraft,
+      duration_seconds: Some(5),
+      video_batch_count: Some(1),
+      ..Default::default()
+    }
+  }
+
+  fn get_artcraft_client() -> RouterClient {
+    let cookies = std::fs::read_to_string("/Users/bt/Artcraft/credentials/artcraft_cookies.txt")
+      .expect("Failed to read artcraft cookies");
+    let cookies = cookies.trim().to_string();
+    let credentials = StorytellerCredentialSet::parse_multi_cookie_header(&cookies)
+      .expect("Failed to parse cookies")
+      .expect("No credentials found");
+    RouterClient::Artcraft(RouterArtcraftClient::new(ApiHost::Storyteller, credentials))
+  }
+
+  async fn run_pipeline(builder: GenerateVideoRequestBuilder) -> GenerateVideoResponse {
+    let client = get_artcraft_client();
+
+    let draft_or_request = builder.build2().expect("build2 should succeed");
+    let request = match draft_or_request {
+      VideoGenerationDraftOrRequest::Request(r) => r,
+      _ => panic!("expected Request variant (Artcraft skips draft)"),
+    };
+
+    let response = request.send_request(&client).await.expect("send_request should succeed");
+
+    match &response {
+      GenerateVideoResponse::Artcraft(p) => {
+        println!("inference_job_token={:?}", p.inference_job_token);
+        println!("all_inference_job_tokens={:?}", p.all_inference_job_tokens);
+      }
+      other => println!("response: {:?}", other),
+    }
+
+    response
+  }
+}

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

@@ -12,6 +12,7 @@ pub mod kling_2_5_turbo_pro;
 pub mod kling_2_6_pro;
 pub mod kling_3p0_pro;
 pub mod kling_3p0_standard;
+pub mod minimax_h3;
 pub mod preview_model;
 pub mod preview_model_fast;
 pub(crate) mod request_common;

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/fal/minimax_h3/build.rs

@@ -0,0 +1,543 @@
+use fal_client::requests::api::video::image::minimax_h3::api::MinimaxH3ImageToVideoRequest;
+use fal_client::requests::api::video::reference::minimax_h3::api::{
+  MinimaxH3ReferenceToVideoAspectRatio, MinimaxH3ReferenceToVideoRequest,
+};
+use fal_client::requests::api::video::text::minimax_h3::api::{
+  MinimaxH3Resolution, MinimaxH3TextToVideoAspectRatio, MinimaxH3TextToVideoRequest,
+};
+
+use crate::api::audio_list_ref::AudioListRef;
+use crate::api::image_list_ref::ImageListRef;
+use crate::api::router_aspect_ratio::RouterAspectRatio;
+use crate::api::router_resolution::RouterResolution;
+use crate::api::video_list_ref::VideoListRef;
+use crate::client::request_mismatch_mitigation_strategy::RequestMismatchMitigationStrategy;
+use crate::errors::artcraft_router_error::ArtcraftRouterError;
+use crate::errors::client_error::ClientError;
+use crate::generate::generate_video::generate_video_request_builder::GenerateVideoRequestBuilder;
+use crate::generate::generate_video::providers::fal::kling_1_6_pro::build::optional_url;
+use crate::generate::generate_video::providers::fal::minimax_h3::request::{
+  FalMinimaxH3Mode, FalMinimaxH3RequestState,
+};
+use crate::generate::generate_video::video_generation_draft_or_request::VideoGenerationDraftOrRequest;
+use crate::generate::generate_video::video_generation_request::VideoGenerationRequest;
+
+const MAX_REFERENCE_IMAGES: usize = 9;
+const MAX_REFERENCE_VIDEOS: usize = 3;
+const MAX_REFERENCE_AUDIO: usize = 3;
+const MAX_REFERENCE_FILES: usize = 12;
+const MIN_DURATION_SECONDS: u16 = 5;
+const MAX_DURATION_SECONDS: u16 = 15;
+
+#[derive(Debug, Clone, Copy)]
+pub(crate) enum PlanAspectRatio {
+  TwentyOneByNine,
+  SixteenByNine,
+  FourByThree,
+  Square,
+  ThreeByFour,
+  NineBySixteen,
+}
+
+pub fn build_fal_minimax_h3(
+  builder: GenerateVideoRequestBuilder,
+) -> Result<VideoGenerationDraftOrRequest, ArtcraftRouterError> {
+  let state = build_fal_minimax_h3_state(builder)?;
+  Ok(VideoGenerationDraftOrRequest::Request(VideoGenerationRequest::FalMinimaxH3(state)))
+}
+
+pub(crate) fn build_fal_minimax_h3_state(
+  builder: GenerateVideoRequestBuilder,
+) -> Result<FalMinimaxH3RequestState, ArtcraftRouterError> {
+  let strategy = builder.request_mismatch_mitigation_strategy;
+
+  let aspect_ratio = plan_aspect_ratio(builder.aspect_ratio, strategy)?;
+  let resolution = plan_resolution(builder.resolution, strategy)?;
+  let duration = plan_duration(builder.duration_seconds, strategy)?;
+  let prompt = builder.prompt.clone().unwrap_or_default();
+  let reference_image_urls = resolve_image_urls(builder.reference_images.clone())?;
+  let reference_video_urls = resolve_video_urls(builder.reference_videos.clone())?;
+  let reference_audio_urls = resolve_audio_urls(builder.reference_audio.clone())?;
+  let start_image_url = optional_url(builder.start_frame.clone())?;
+  let end_image_url = optional_url(builder.end_frame.clone())?;
+
+  let has_references = !reference_image_urls.is_empty()
+    || !reference_video_urls.is_empty()
+    || !reference_audio_urls.is_empty();
+
+  // Dispatch: any reference asset → reference-to-video; start_frame → image; else → text.
+  let mode = if has_references {
+    if start_image_url.is_some() || end_image_url.is_some() {
+      return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+        field: "reference_images",
+        value: "MiniMax H3 reference-to-video cannot also accept a start_frame or end_frame".to_string(),
+      }));
+    }
+    check_reference_counts(
+      reference_image_urls.len(),
+      reference_video_urls.len(),
+      reference_audio_urls.len(),
+    )?;
+    FalMinimaxH3Mode::ReferenceToVideo(MinimaxH3ReferenceToVideoRequest {
+      prompt,
+      reference_image_urls: non_empty(reference_image_urls),
+      reference_video_urls: non_empty(reference_video_urls),
+      reference_audio_urls: non_empty(reference_audio_urls),
+      duration,
+      resolution,
+      aspect_ratio: aspect_ratio.map(to_reference_aspect_ratio),
+    })
+  } else if let Some(image_url) = start_image_url {
+    // Image-to-video has no aspect_ratio input — the output follows the start
+    // frame — so any requested aspect ratio is silently dropped here.
+    FalMinimaxH3Mode::ImageToVideo(MinimaxH3ImageToVideoRequest {
+      prompt,
+      image_url,
+      end_image_url,
+      duration,
+      resolution,
+    })
+  } else {
+    if end_image_url.is_some() {
+      return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+        field: "end_frame",
+        value: "MiniMax H3 requires a start_frame when end_frame is provided".to_string(),
+      }));
+    }
+    FalMinimaxH3Mode::TextToVideo(MinimaxH3TextToVideoRequest {
+      prompt,
+      duration,
+      resolution,
+      aspect_ratio: aspect_ratio.map(to_t2v_aspect_ratio),
+    })
+  };
+
+  Ok(FalMinimaxH3RequestState { mode })
+}
+
+// ── Input helpers ──
+
+/// fal's reference limits: at most 9 images, 3 videos, 3 audio clips, and 12
+/// files overall; audio cannot be the only reference input.
+fn check_reference_counts(
+  image_count: usize,
+  video_count: usize,
+  audio_count: usize,
+) -> Result<(), ArtcraftRouterError> {
+  if image_count > MAX_REFERENCE_IMAGES {
+    return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+      field: "reference_images",
+      value: format!("MiniMax H3 supports at most {MAX_REFERENCE_IMAGES} reference images, got {image_count}"),
+    }));
+  }
+  if video_count > MAX_REFERENCE_VIDEOS {
+    return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+      field: "reference_videos",
+      value: format!("MiniMax H3 supports at most {MAX_REFERENCE_VIDEOS} reference videos, got {video_count}"),
+    }));
+  }
+  if audio_count > MAX_REFERENCE_AUDIO {
+    return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+      field: "reference_audio",
+      value: format!("MiniMax H3 supports at most {MAX_REFERENCE_AUDIO} reference audio clips, got {audio_count}"),
+    }));
+  }
+  let total = image_count + video_count + audio_count;
+  if total > MAX_REFERENCE_FILES {
+    return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+      field: "reference_images",
+      value: format!("MiniMax H3 supports at most {MAX_REFERENCE_FILES} reference files overall, got {total}"),
+    }));
+  }
+  if audio_count > 0 && image_count == 0 && video_count == 0 {
+    return Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+      field: "reference_audio",
+      value: "MiniMax H3 requires at least one reference image or video alongside reference audio".to_string(),
+    }));
+  }
+  Ok(())
+}
+
+fn resolve_image_urls(
+  reference_images: Option<ImageListRef>,
+) -> Result<Vec<String>, ArtcraftRouterError> {
+  match reference_images {
+    None => Ok(vec![]),
+    Some(ImageListRef::Urls(urls)) => Ok(urls),
+    Some(ImageListRef::MediaFileTokens(_)) => {
+      Err(ArtcraftRouterError::Client(ClientError::FalOnlySupportsUrls))
+    }
+  }
+}
+
+fn resolve_video_urls(
+  reference_videos: Option<VideoListRef>,
+) -> Result<Vec<String>, ArtcraftRouterError> {
+  match reference_videos {
+    None => Ok(vec![]),
+    Some(VideoListRef::Urls(urls)) => Ok(urls),
+    Some(VideoListRef::MediaFileTokens(_)) => {
+      Err(ArtcraftRouterError::Client(ClientError::FalOnlySupportsUrls))
+    }
+  }
+}
+
+fn resolve_audio_urls(
+  reference_audio: Option<AudioListRef>,
+) -> Result<Vec<String>, ArtcraftRouterError> {
+  match reference_audio {
+    None => Ok(vec![]),
+    Some(AudioListRef::Urls(urls)) => Ok(urls),
+    Some(AudioListRef::MediaFileTokens(_)) => {
+      Err(ArtcraftRouterError::Client(ClientError::FalOnlySupportsUrls))
+    }
+  }
+}
+
+fn non_empty(urls: Vec<String>) -> Option<Vec<String>> {
+  if urls.is_empty() { None } else { Some(urls) }
+}
+
+// ── Plan helpers ──
+
+/// `None` (including the `Auto*` ratios) leaves the field unset so fal's
+/// per-mode default applies: 16:9 for text-to-video, adaptive for
+/// reference-to-video.
+fn plan_aspect_ratio(
+  aspect_ratio: Option<RouterAspectRatio>,
+  strategy: RequestMismatchMitigationStrategy,
+) -> Result<Option<PlanAspectRatio>, ArtcraftRouterError> {
+  use PlanAspectRatio as Ar;
+  match aspect_ratio {
+    None
+    | Some(RouterAspectRatio::Auto)
+    | Some(RouterAspectRatio::Auto2k)
+    | Some(RouterAspectRatio::Auto3k)
+    | Some(RouterAspectRatio::Auto4k) => Ok(None),
+
+    Some(RouterAspectRatio::WideTwentyOneByNine) => Ok(Some(Ar::TwentyOneByNine)),
+    Some(RouterAspectRatio::WideSixteenByNine) | Some(RouterAspectRatio::Wide) => Ok(Some(Ar::SixteenByNine)),
+    Some(RouterAspectRatio::TallNineBySixteen) | Some(RouterAspectRatio::Tall) => Ok(Some(Ar::NineBySixteen)),
+    Some(RouterAspectRatio::WideFourByThree) => Ok(Some(Ar::FourByThree)),
+    Some(RouterAspectRatio::TallThreeByFour) => Ok(Some(Ar::ThreeByFour)),
+    Some(RouterAspectRatio::Square) | Some(RouterAspectRatio::SquareHd) => Ok(Some(Ar::Square)),
+
+    Some(other) => match strategy {
+      RequestMismatchMitigationStrategy::ErrorOut => {
+        Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+          field: "aspect_ratio",
+          value: format!("{:?}", other),
+        }))
+      }
+      _ => Ok(Some(Ar::SixteenByNine)),
+    },
+  }
+}
+
+/// MiniMax H3 offers exactly two output sizes: 768P and 2K.
+fn plan_resolution(
+  resolution: Option<RouterResolution>,
+  strategy: RequestMismatchMitigationStrategy,
+) -> Result<Option<MinimaxH3Resolution>, ArtcraftRouterError> {
+  match resolution {
+    None => Ok(None),
+
+    // 480p/720p round up to 768P, the smallest size H3 offers.
+    Some(RouterResolution::FourEightyP)
+    | Some(RouterResolution::SevenTwentyP) => Ok(Some(MinimaxH3Resolution::SevenSixtyEightP)),
+    Some(RouterResolution::TenEightyP)
+    | Some(RouterResolution::TwoK) => Ok(Some(MinimaxH3Resolution::TwoK)),
+
+    Some(other) => match strategy {
+      RequestMismatchMitigationStrategy::ErrorOut => {
+        Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+          field: "resolution",
+          value: format!("{:?}", other),
+        }))
+      }
+      RequestMismatchMitigationStrategy::PayMoreUpgrade => Ok(Some(MinimaxH3Resolution::TwoK)),
+      RequestMismatchMitigationStrategy::PayLessDowngrade => Ok(Some(MinimaxH3Resolution::SevenSixtyEightP)),
+    },
+  }
+}
+
+fn plan_duration(
+  duration_seconds: Option<u16>,
+  strategy: RequestMismatchMitigationStrategy,
+) -> Result<Option<u8>, ArtcraftRouterError> {
+  match duration_seconds {
+    None => Ok(None),
+    Some(seconds) if (MIN_DURATION_SECONDS..=MAX_DURATION_SECONDS).contains(&seconds) => {
+      Ok(Some(seconds as u8))
+    }
+    Some(other) => match strategy {
+      RequestMismatchMitigationStrategy::ErrorOut => {
+        Err(ArtcraftRouterError::Client(ClientError::ModelDoesNotSupportOption {
+          field: "duration_seconds",
+          value: format!("{}", other),
+        }))
+      }
+      RequestMismatchMitigationStrategy::PayMoreUpgrade
+      | RequestMismatchMitigationStrategy::PayLessDowngrade => {
+        Ok(Some(other.clamp(MIN_DURATION_SECONDS, MAX_DURATION_SECONDS) as u8))
+      }
+    },
+  }
+}
+
+// ── Leaf converters ──
+
+fn to_t2v_aspect_ratio(a: PlanAspectRatio) -> MinimaxH3TextToVideoAspectRatio {
+  match a {
+    PlanAspectRatio::TwentyOneByNine => MinimaxH3TextToVideoAspectRatio::TwentyOneByNine,
+    PlanAspectRatio::SixteenByNine => MinimaxH3TextToVideoAspectRatio::SixteenByNine,
+    PlanAspectRatio::FourByThree => MinimaxH3TextToVideoAspectRatio::FourByThree,
+    PlanAspectRatio::Square => MinimaxH3TextToVideoAspectRatio::Square,
+    PlanAspectRatio::ThreeByFour => MinimaxH3TextToVideoAspectRatio::ThreeByFour,
+    PlanAspectRatio::NineBySixteen => MinimaxH3TextToVideoAspectRatio::NineBySixteen,
+  }
+}
+
+fn to_reference_aspect_ratio(a: PlanAspectRatio) -> MinimaxH3ReferenceToVideoAspectRatio {
+  match a {
+    PlanAspectRatio::TwentyOneByNine => MinimaxH3ReferenceToVideoAspectRatio::TwentyOneByNine,
+    PlanAspectRatio::SixteenByNine => MinimaxH3ReferenceToVideoAspectRatio::SixteenByNine,
+    PlanAspectRatio::FourByThree => MinimaxH3ReferenceToVideoAspectRatio::FourByThree,
+    PlanAspectRatio::Square => MinimaxH3ReferenceToVideoAspectRatio::Square,
+    PlanAspectRatio::ThreeByFour => MinimaxH3ReferenceToVideoAspectRatio::ThreeByFour,
+    PlanAspectRatio::NineBySixteen => MinimaxH3ReferenceToVideoAspectRatio::NineBySixteen,
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use crate::api::image_ref::ImageRef;
+  use crate::api::router_provider::RouterProvider;
+  use crate::api::router_video_model::RouterVideoModel;
+
+  use super::*;
+
+  const START_URL: &str = "https://example.com/start.png";
+  const END_URL: &str = "https://example.com/end.png";
+
+  mod dispatch_tests {
+    use super::*;
+
+    #[test]
+    fn no_inputs_picks_t2v() {
+      let state = build_fal_minimax_h3_state(base_builder()).expect("build");
+      assert!(matches!(state.mode, FalMinimaxH3Mode::TextToVideo(_)));
+    }
+
+    #[test]
+    fn start_frame_picks_i2v() {
+      let mut b = base_builder();
+      b.start_frame = Some(ImageRef::Url(START_URL.to_string()));
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      assert!(matches!(state.mode, FalMinimaxH3Mode::ImageToVideo(_)));
+    }
+
+    #[test]
+    fn start_and_end_frame_picks_i2v_with_end_image_url() {
+      let mut b = base_builder();
+      b.start_frame = Some(ImageRef::Url(START_URL.to_string()));
+      b.end_frame = Some(ImageRef::Url(END_URL.to_string()));
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      let FalMinimaxH3Mode::ImageToVideo(req) = state.mode else {
+        panic!("expected ImageToVideo");
+      };
+      assert_eq!(req.image_url, START_URL);
+      assert_eq!(req.end_image_url.as_deref(), Some(END_URL));
+    }
+
+    #[test]
+    fn end_frame_without_start_frame_errors() {
+      let mut b = base_builder();
+      b.end_frame = Some(ImageRef::Url(END_URL.to_string()));
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+
+    #[test]
+    fn reference_images_pick_reference_to_video() {
+      let state = build_fal_minimax_h3_state(builder_with_reference_images(3)).expect("build");
+      let FalMinimaxH3Mode::ReferenceToVideo(req) = state.mode else {
+        panic!("expected ReferenceToVideo");
+      };
+      assert_eq!(req.reference_image_urls.map(|urls| urls.len()), Some(3));
+      assert_eq!(req.reference_video_urls, None);
+      assert_eq!(req.reference_audio_urls, None);
+    }
+
+    #[test]
+    fn reference_videos_pick_reference_to_video() {
+      let mut b = base_builder();
+      b.reference_videos = Some(VideoListRef::Urls(vec!["https://example.com/a.mp4".to_string()]));
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      let FalMinimaxH3Mode::ReferenceToVideo(req) = state.mode else {
+        panic!("expected ReferenceToVideo");
+      };
+      assert_eq!(req.reference_video_urls.map(|urls| urls.len()), Some(1));
+    }
+
+    #[test]
+    fn ten_reference_images_error() {
+      assert!(build_fal_minimax_h3_state(builder_with_reference_images(10)).is_err());
+    }
+
+    #[test]
+    fn four_reference_videos_error() {
+      let mut b = base_builder();
+      b.reference_videos = Some(VideoListRef::Urls(
+        (0..4).map(|i| format!("https://example.com/v-{i}.mp4")).collect(),
+      ));
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+
+    #[test]
+    fn thirteen_reference_files_error() {
+      // 9 images + 3 videos + 1 audio = 13 > 12 total.
+      let mut b = builder_with_reference_images(9);
+      b.reference_videos = Some(VideoListRef::Urls(
+        (0..3).map(|i| format!("https://example.com/v-{i}.mp4")).collect(),
+      ));
+      b.reference_audio = Some(AudioListRef::Urls(vec!["https://example.com/a.mp3".to_string()]));
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+
+    #[test]
+    fn audio_only_reference_errors() {
+      let mut b = base_builder();
+      b.reference_audio = Some(AudioListRef::Urls(vec!["https://example.com/a.mp3".to_string()]));
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+
+    #[test]
+    fn reference_images_with_start_frame_error() {
+      let mut b = builder_with_reference_images(2);
+      b.start_frame = Some(ImageRef::Url(START_URL.to_string()));
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+  }
+
+  mod plan_tests {
+    use super::*;
+
+    #[test]
+    fn duration_20_errors_under_error_out() {
+      let mut b = base_builder();
+      b.duration_seconds = Some(20);
+      b.request_mismatch_mitigation_strategy = RequestMismatchMitigationStrategy::ErrorOut;
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+
+    #[test]
+    fn duration_20_clamps_to_15_under_pay_less() {
+      let mut b = base_builder();
+      b.duration_seconds = Some(20);
+      b.request_mismatch_mitigation_strategy = RequestMismatchMitigationStrategy::PayLessDowngrade;
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      let FalMinimaxH3Mode::TextToVideo(req) = state.mode else {
+        panic!("expected TextToVideo");
+      };
+      assert_eq!(req.duration, Some(15));
+    }
+
+    #[test]
+    fn duration_3_clamps_to_5_under_pay_less() {
+      let mut b = base_builder();
+      b.duration_seconds = Some(3);
+      b.request_mismatch_mitigation_strategy = RequestMismatchMitigationStrategy::PayLessDowngrade;
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      let FalMinimaxH3Mode::TextToVideo(req) = state.mode else {
+        panic!("expected TextToVideo");
+      };
+      assert_eq!(req.duration, Some(5));
+    }
+
+    #[test]
+    fn resolution_480p_and_720p_map_to_768p() {
+      for res in [RouterResolution::FourEightyP, RouterResolution::SevenTwentyP] {
+        let mut b = base_builder();
+        b.resolution = Some(res);
+        let state = build_fal_minimax_h3_state(b).expect("build");
+        let FalMinimaxH3Mode::TextToVideo(req) = state.mode else {
+          panic!("expected TextToVideo");
+        };
+        assert_eq!(req.resolution, Some(MinimaxH3Resolution::SevenSixtyEightP), "res={res:?}");
+      }
+    }
+
+    #[test]
+    fn resolution_1080p_and_2k_map_to_2k() {
+      for res in [RouterResolution::TenEightyP, RouterResolution::TwoK] {
+        let mut b = base_builder();
+        b.resolution = Some(res);
+        let state = build_fal_minimax_h3_state(b).expect("build");
+        let FalMinimaxH3Mode::TextToVideo(req) = state.mode else {
+          panic!("expected TextToVideo");
+        };
+        assert_eq!(req.resolution, Some(MinimaxH3Resolution::TwoK), "res={res:?}");
+      }
+    }
+
+    #[test]
+    fn resolution_4k_errors_under_error_out() {
+      let mut b = base_builder();
+      b.resolution = Some(RouterResolution::FourK);
+      b.request_mismatch_mitigation_strategy = RequestMismatchMitigationStrategy::ErrorOut;
+      assert!(build_fal_minimax_h3_state(b).is_err());
+    }
+
+    #[test]
+    fn twenty_one_by_nine_is_supported() {
+      let mut b = base_builder();
+      b.aspect_ratio = Some(RouterAspectRatio::WideTwentyOneByNine);
+      b.request_mismatch_mitigation_strategy = RequestMismatchMitigationStrategy::ErrorOut;
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      let FalMinimaxH3Mode::TextToVideo(req) = state.mode else {
+        panic!("expected TextToVideo");
+      };
+      assert_eq!(req.aspect_ratio, Some(MinimaxH3TextToVideoAspectRatio::TwentyOneByNine));
+    }
+
+    #[test]
+    fn auto_aspect_ratio_is_left_unset() {
+      let mut b = base_builder();
+      b.aspect_ratio = Some(RouterAspectRatio::Auto);
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      let FalMinimaxH3Mode::TextToVideo(req) = state.mode else {
+        panic!("expected TextToVideo");
+      };
+      assert_eq!(req.aspect_ratio, None);
+    }
+
+    #[test]
+    fn i2v_aspect_ratio_is_silently_dropped() {
+      let mut b = base_builder();
+      b.start_frame = Some(ImageRef::Url(START_URL.to_string()));
+      b.aspect_ratio = Some(RouterAspectRatio::TallNineBySixteen);
+      b.request_mismatch_mitigation_strategy = RequestMismatchMitigationStrategy::ErrorOut;
+      // Image-to-video has no aspect_ratio field; the request still builds.
+      let state = build_fal_minimax_h3_state(b).expect("build");
+      assert!(matches!(state.mode, FalMinimaxH3Mode::ImageToVideo(_)));
+    }
+  }
+
+  fn base_builder() -> GenerateVideoRequestBuilder {
+    GenerateVideoRequestBuilder {
+      model: RouterVideoModel::MinimaxH3,
+      provider: RouterProvider::Fal,
+      prompt: Some("test".to_string()),
+      ..Default::default()
+    }
+  }
+
+  fn builder_with_reference_images(count: usize) -> GenerateVideoRequestBuilder {
+    let urls = (0..count)
+      .map(|i| format!("https://example.com/ref-{}.png", i))
+      .collect();
+    let mut b = base_builder();
+    b.reference_images = Some(ImageListRef::Urls(urls));
+    b
+  }
+}

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/fal/minimax_h3/cost.rs

@@ -0,0 +1,129 @@
+use fal_client::requests::traits::fal_request_cost_calculator_trait::FalRequestCostCalculator;
+
+use crate::generate::generate_video::providers::fal::minimax_h3::request::{
+  FalMinimaxH3Mode, FalMinimaxH3RequestState,
+};
+use crate::generate::generate_video::video_generation_cost_estimate::VideoGenerationCostEstimate;
+
+#[derive(Clone, Debug)]
+pub struct FalMinimaxH3CostState {
+  pub cost_in_usd_cents: u64,
+}
+
+impl FalMinimaxH3CostState {
+  pub fn from_request(request: &FalMinimaxH3RequestState) -> Self {
+    // Cost math is owned by fal_client's per-endpoint
+    // `FalRequestCostCalculator` implementations. The router state just
+    // forwards the result so router cost ≡ fal_client cost by construction.
+    let cost_in_usd_cents = match &request.mode {
+      FalMinimaxH3Mode::TextToVideo(req) => req.calculate_cost_in_cents(),
+      FalMinimaxH3Mode::ImageToVideo(req) => req.calculate_cost_in_cents(),
+      FalMinimaxH3Mode::ReferenceToVideo(req) => req.calculate_cost_in_cents(),
+    };
+    Self { cost_in_usd_cents }
+  }
+
+  pub fn estimate_cost(&self) -> VideoGenerationCostEstimate {
+    VideoGenerationCostEstimate {
+      cost_in_credits: Some(self.cost_in_usd_cents),
+      cost_in_usd_cents: Some(self.cost_in_usd_cents),
+      is_free: false,
+      is_unlimited: false,
+      is_rate_limited: false,
+      has_watermark: false,
+      failures_are_refunded: None,
+    }
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use crate::api::image_list_ref::ImageListRef;
+  use crate::api::image_ref::ImageRef;
+  use crate::api::router_provider::RouterProvider;
+  use crate::api::router_resolution::RouterResolution;
+  use crate::api::router_video_model::RouterVideoModel;
+  use crate::generate::generate_video::generate_video_request_builder::GenerateVideoRequestBuilder;
+  use crate::generate::generate_video::providers::fal::minimax_h3::build::build_fal_minimax_h3_state;
+
+  use super::*;
+
+  // Pricing (from fal_client's minimax_h3 cost modules):
+  //   768P: $0.16/sec → 5s = 80¢
+  //   2K:   $0.26/sec → 5s = 130¢, 10s = 260¢
+  // Reference-to-video additionally bills 8¢ per reference image beyond the
+  // first 5. fal defaults when unset: duration = 5s, resolution = 2K.
+
+  #[test]
+  fn t2v_default_settings_is_130() {
+    assert_eq!(cost_cents(base_builder(None, None)), 130);
+  }
+
+  #[test]
+  fn t2v_5s_768p_is_80() {
+    // RouterResolution::SevenTwentyP maps to H3's 768P.
+    assert_eq!(cost_cents(base_builder(Some(5), Some(RouterResolution::SevenTwentyP))), 80);
+  }
+
+  #[test]
+  fn t2v_10s_2k_is_260() {
+    assert_eq!(cost_cents(base_builder(Some(10), Some(RouterResolution::TenEightyP))), 260);
+  }
+
+  #[test]
+  fn i2v_5s_768p_is_80() {
+    let mut b = base_builder(Some(5), Some(RouterResolution::FourEightyP));
+    b.start_frame = Some(ImageRef::Url("https://example.com/start.png".to_string()));
+    assert_eq!(cost_cents(b), 80);
+  }
+
+  #[test]
+  fn reference_five_images_5s_2k_is_130() {
+    assert_eq!(cost_cents(builder_with_references(5, Some(RouterResolution::TenEightyP))), 130);
+  }
+
+  #[test]
+  fn reference_nine_images_5s_2k_is_162() {
+    // 130¢ video + 4 extra images × 8¢ = 162¢.
+    assert_eq!(cost_cents(builder_with_references(9, Some(RouterResolution::TenEightyP))), 162);
+  }
+
+  #[test]
+  fn estimate_cost_forwards_cents() {
+    let estimate = FalMinimaxH3CostState { cost_in_usd_cents: 130 }.estimate_cost();
+    assert_eq!(estimate.cost_in_usd_cents, Some(130));
+    assert_eq!(estimate.cost_in_credits, Some(130));
+    assert!(!estimate.is_free);
+  }
+
+  fn base_builder(
+    duration_seconds: Option<u16>,
+    resolution: Option<RouterResolution>,
+  ) -> GenerateVideoRequestBuilder {
+    GenerateVideoRequestBuilder {
+      model: RouterVideoModel::MinimaxH3,
+      provider: RouterProvider::Fal,
+      prompt: Some("test".to_string()),
+      duration_seconds,
+      resolution,
+      ..Default::default()
+    }
+  }
+
+  fn builder_with_references(
+    image_count: usize,
+    resolution: Option<RouterResolution>,
+  ) -> GenerateVideoRequestBuilder {
+    let urls = (0..image_count)
+      .map(|i| format!("https://example.com/ref-{}.png", i))
+      .collect();
+    let mut b = base_builder(Some(5), resolution);
+    b.reference_images = Some(ImageListRef::Urls(urls));
+    b
+  }
+
+  fn cost_cents(builder: GenerateVideoRequestBuilder) -> u64 {
+    let state = build_fal_minimax_h3_state(builder).expect("build");
+    FalMinimaxH3CostState::from_request(&state).cost_in_usd_cents
+  }
+}

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/fal/minimax_h3/mod.rs

@@ -0,0 +1,3 @@
+pub mod build;
+pub mod cost;
+pub mod request;

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/fal/minimax_h3/request.rs

@@ -0,0 +1,140 @@
+use std::fmt::Debug;
+use std::sync::Arc;
+
+use fal_client::requests::api::video::image::minimax_h3::api::MinimaxH3ImageToVideoRequest;
+use fal_client::requests::api::video::reference::minimax_h3::api::MinimaxH3ReferenceToVideoRequest;
+use fal_client::requests::api::video::text::minimax_h3::api::MinimaxH3TextToVideoRequest;
+use fal_client::requests::traits::fal_endpoint_trait::FalEndpoint;
+
+use crate::client::router_fal_client::RouterFalClient;
+use crate::errors::artcraft_router_error::ArtcraftRouterError;
+use crate::generate::generate_video::generate_video_response::{
+  FalVideoResponsePayload, GenerateVideoResponse,
+};
+
+#[derive(Clone, Debug)]
+pub enum FalMinimaxH3Mode {
+  TextToVideo(MinimaxH3TextToVideoRequest),
+  ImageToVideo(MinimaxH3ImageToVideoRequest),
+  ReferenceToVideo(MinimaxH3ReferenceToVideoRequest),
+}
+
+#[derive(Clone, Debug)]
+pub struct FalMinimaxH3RequestState {
+  pub mode: FalMinimaxH3Mode,
+}
+
+impl FalMinimaxH3RequestState {
+  pub async fn send(&self, client: &RouterFalClient) -> Result<GenerateVideoResponse, ArtcraftRouterError> {
+    match &self.mode {
+      FalMinimaxH3Mode::TextToVideo(request) => send_request(request, client).await,
+      FalMinimaxH3Mode::ImageToVideo(request) => send_request(request, client).await,
+      FalMinimaxH3Mode::ReferenceToVideo(request) => send_request(request, client).await,
+    }
+  }
+}
+
+// ── Helpers ──
+
+async fn send_request<T>(request: &T, client: &RouterFalClient) -> Result<GenerateVideoResponse, ArtcraftRouterError>
+where
+  T: FalEndpoint + Clone + Debug + Send + Sync + 'static,
+{
+  let outbound: Arc<dyn Debug + Send + Sync> = Arc::new(request.clone());
+  let payload = send_fal_request(request, client).await?;
+  Ok(GenerateVideoResponse::Fal(FalVideoResponsePayload {
+    request_id: payload.request_id,
+    gateway_request_id: payload.gateway_request_id,
+    maybe_status_url: payload.status_url,
+    maybe_response_url: payload.response_url,
+    maybe_outbound_request: Some(outbound),
+  }))
+}
+
+struct FalResponseIds {
+  request_id: Option<String>,
+  gateway_request_id: Option<String>,
+  status_url: Option<String>,
+  response_url: Option<String>,
+}
+
+async fn send_fal_request<T: FalEndpoint>(
+  request: &T,
+  client: &RouterFalClient,
+) -> Result<FalResponseIds, ArtcraftRouterError> {
+  if let Some(webhook_url) = &client.webhook_url {
+    let response = request.send_webhook_request(&client.api_key, webhook_url).await?;
+    Ok(FalResponseIds {
+      request_id: response.request_id,
+      gateway_request_id: response.gateway_request_id,
+      status_url: None,
+      response_url: None,
+    })
+  } else {
+    let response = request.send_queue_request(&client.api_key).await?;
+    Ok(FalResponseIds {
+      request_id: Some(response.request_id),
+      gateway_request_id: None,
+      status_url: Some(response.status_url),
+      response_url: Some(response.response_url),
+    })
+  }
+}
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+  use fal_client::creds::fal_api_key::FalApiKey;
+  use fal_client::requests::api::video::text::minimax_h3::api::{
+    MinimaxH3Resolution, MinimaxH3TextToVideoAspectRatio,
+  };
+  use test_data::web::image_urls::JUNO_AT_LAKE_IMAGE_URL;
+
+  #[tokio::test]
+  #[ignore] // requires real API key, incurs cost
+  async fn send_text_to_video_webhook() {
+    let state = FalMinimaxH3RequestState {
+      mode: FalMinimaxH3Mode::TextToVideo(MinimaxH3TextToVideoRequest {
+        prompt: "a calm lake at sunrise".to_string(),
+        duration: Some(5),
+        resolution: Some(MinimaxH3Resolution::SevenSixtyEightP),
+        aspect_ratio: Some(MinimaxH3TextToVideoAspectRatio::SixteenByNine),
+      }),
+    };
+    let response = state.send(&client_with_webhook()).await.expect("send should succeed");
+    let payload = response.get_fal_payload().expect("expected Fal payload");
+    assert!(payload.request_id.is_some() || payload.gateway_request_id.is_some());
+  }
+
+  #[tokio::test]
+  #[ignore] // requires real API key, incurs cost
+  async fn send_image_to_video_webhook() {
+    let state = FalMinimaxH3RequestState {
+      mode: FalMinimaxH3Mode::ImageToVideo(MinimaxH3ImageToVideoRequest {
+        prompt: "the lake comes alive".to_string(),
+        image_url: JUNO_AT_LAKE_IMAGE_URL.to_string(),
+        end_image_url: None,
+        duration: Some(5),
+        resolution: Some(MinimaxH3Resolution::SevenSixtyEightP),
+      }),
+    };
+    let response = state.send(&client_with_webhook()).await.expect("send should succeed");
+    let payload = response.get_fal_payload().expect("expected Fal payload");
+    assert!(payload.request_id.is_some() || payload.gateway_request_id.is_some());
+  }
+
+  // ── Helpers ──
+
+  fn read_fal_api_key() -> FalApiKey {
+    let secret = std::fs::read_to_string("/Users/bt/Artcraft/credentials/fal_api_key.txt")
+      .expect("Failed to read fal_api_key.txt");
+    FalApiKey::from_str(secret.trim())
+  }
+
+  fn client_with_webhook() -> RouterFalClient {
+    RouterFalClient::new_with_webhook(
+      read_fal_api_key(),
+      "https://example.com/fal-webhook-test".to_string(),
+    )
+  }
+}

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/providers/fal/mod.rs

@@ -5,6 +5,7 @@ pub mod kling_2_5_turbo_pro;
 pub mod kling_2_6_pro;
 pub mod kling_3p0_pro;
 pub mod kling_3p0_standard;
+pub mod minimax_h3;
 pub mod seedance_1p0_lite;
 pub mod seedance_1p5_pro;
 pub mod sora_2;

crates/api_clients/artcraft/artcraft_router/src/generate/generate_video/video_generation_request.rs

@@ -23,6 +23,8 @@ use crate::generate::generate_video::providers::artcraft::kling_3p0_pro::cost::A
 use crate::generate::generate_video::providers::artcraft::kling_3p0_pro::request::ArtcraftKling3p0ProRequestState;
 use crate::generate::generate_video::providers::artcraft::kling_3p0_standard::cost::ArtcraftKling3p0StandardCostState;
 use crate::generate::generate_video::providers::artcraft::kling_3p0_standard::request::ArtcraftKling3p0StandardRequestState;
+use crate::generate::generate_video::providers::artcraft::minimax_h3::cost::ArtcraftMinimaxH3CostState;
+use crate::generate::generate_video::providers::artcraft::minimax_h3::request::ArtcraftMinimaxH3RequestState;
 use crate::generate::generate_video::providers::artcraft::preview_model::cost::ArtcraftPreviewModelCostState;
 use crate::generate::generate_video::providers::artcraft::preview_model::request::ArtcraftPreviewModelRequestState;
 use crate::generate::generate_video::providers::artcraft::preview_model_fast::cost::ArtcraftPreviewModelFastCostState;
@@ -89,6 +91,8 @@ use crate::generate::generate_video::providers::fal::kling_3p0_pro::cost::FalKli
 use crate::generate::generate_video::providers::fal::kling_3p0_pro::request::FalKling3p0ProRequestState;
 use crate::generate::generate_video::providers::fal::kling_3p0_standard::cost::FalKling3p0StandardCostState;
 use crate::generate::generate_video::providers::fal::kling_3p0_standard::request::FalKling3p0StandardRequestState;
+use crate::generate::generate_video::providers::fal::minimax_h3::cost::FalMinimaxH3CostState;
+use crate::generate::generate_video::providers::fal::minimax_h3::request::FalMinimaxH3RequestState;
 use crate::generate::generate_video::providers::fal::seedance_1p0_lite::cost::FalSeedance10LiteCostState;
 use crate::generate::generate_video::providers::fal::seedance_1p0_lite::request::FalSeedance10LiteRequestState;
 use crate::generate::generate_video::providers::fal::sora_2::cost::FalSora2CostState;
@@ -144,6 +148,7 @@ pub enum VideoGenerationRequest {
   ArtcraftKling2p6Pro(ArtcraftKling2p6ProRequestState),
   ArtcraftKling3p0Pro(ArtcraftKling3p0ProRequestState),
   ArtcraftKling3p0Standard(ArtcraftKling3p0StandardRequestState),
+  ArtcraftMinimaxH3(ArtcraftMinimaxH3RequestState),
   ArtcraftPreviewModel(ArtcraftPreviewModelRequestState),
   ArtcraftPreviewModelFast(ArtcraftPreviewModelFastRequestState),
   ArtcraftSeedance10Lite(ArtcraftSeedance10LiteRequestState),
@@ -177,6 +182,7 @@ pub enum VideoGenerationRequest {
   FalKling2p6Pro(FalKling2p6ProRequestState),
   FalKling3p0Pro(FalKling3p0ProRequestState),
   FalKling3p0Standard(FalKling3p0StandardRequestState),
+  FalMinimaxH3(FalMinimaxH3RequestState),
   FalSeedance10Lite(FalSeedance10LiteRequestState),
   FalSeedance1p5Pro(FalSeedance1p5ProRequestState),
   FalSora2(FalSora2RequestState),
@@ -214,6 +220,7 @@ impl VideoGenerationRequest {
       Self::ArtcraftKling2p6Pro(_) => RouterProvider::Artcraft,
       Self::ArtcraftKling3p0Pro(_) => RouterProvider::Artcraft,
       Self::ArtcraftKling3p0Standard(_) => RouterProvider::Artcraft,
+      Self::ArtcraftMinimaxH3(_) => RouterProvider::Artcraft,
       Self::ArtcraftPreviewModel(_) => RouterProvider::Artcraft,
       Self::ArtcraftPreviewModelFast(_) => RouterProvider::Artcraft,
       Self::ArtcraftSeedance10Lite(_) => RouterProvider::Artcraft,
@@ -247,6 +254,7 @@ impl VideoGenerationRequest {
       Self::FalKling2p6Pro(_) => RouterProvider::Fal,
       Self::FalKling3p0Pro(_) => RouterProvider::Fal,
       Self::FalKling3p0Standard(_) => RouterProvider::Fal,
+      Self::FalMinimaxH3(_) => RouterProvider::Fal,
       Self::FalSeedance10Lite(_) => RouterProvider::Fal,
       Self::FalSeedance1p5Pro(_) => RouterProvider::Fal,
       Self::FalSora2(_) => RouterProvider::Fal,
@@ -284,6 +292,7 @@ impl VideoGenerationRequest {
       VideoGenerationRequest::ArtcraftKling2p6Pro(request) => Ok(ArtcraftKling2p6ProCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::ArtcraftKling3p0Pro(request) => Ok(ArtcraftKling3p0ProCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::ArtcraftKling3p0Standard(request) => Ok(ArtcraftKling3p0StandardCostState::from_request(request).estimate_cost()),
+      VideoGenerationRequest::ArtcraftMinimaxH3(request) => Ok(ArtcraftMinimaxH3CostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::ArtcraftPreviewModel(request) => Ok(ArtcraftPreviewModelCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::ArtcraftPreviewModelFast(request) => Ok(ArtcraftPreviewModelFastCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::ArtcraftSeedance10Lite(request) => Ok(ArtcraftSeedance10LiteCostState::from_request(request).estimate_cost()),
@@ -317,6 +326,7 @@ impl VideoGenerationRequest {
       VideoGenerationRequest::FalKling2p6Pro(request) => Ok(FalKling2p6ProCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::FalKling3p0Pro(request) => Ok(FalKling3p0ProCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::FalKling3p0Standard(request) => Ok(FalKling3p0StandardCostState::from_request(request).estimate_cost()),
+      VideoGenerationRequest::FalMinimaxH3(request) => Ok(FalMinimaxH3CostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::FalSeedance10Lite(request) => Ok(FalSeedance10LiteCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::FalSeedance1p5Pro(request) => Ok(FalSeedance1p5ProCostState::from_request(request).estimate_cost()),
       VideoGenerationRequest::FalSora2(request) => Ok(FalSora2CostState::from_request(request).estimate_cost()),
@@ -385,6 +395,10 @@ impl VideoGenerationRequest {
         let client_ref = client.get_artcraft_client_ref()?;
         request.send(client_ref).await
       },
+      VideoGenerationRequest::ArtcraftMinimaxH3(request) => {
+        let client_ref = client.get_artcraft_client_ref()?;
+        request.send(client_ref).await
+      },
       VideoGenerationRequest::ArtcraftPreviewModel(request) => {
         let client_ref = client.get_artcraft_client_ref()?;
         request.send(client_ref).await
@@ -517,6 +531,10 @@ impl VideoGenerationRequest {
         let client_ref = client.get_fal_client_ref()?;
         request.send(client_ref).await
       },
+      VideoGenerationRequest::FalMinimaxH3(request) => {
+        let client_ref = client.get_fal_client_ref()?;
+        request.send(client_ref).await
+      },
       VideoGenerationRequest::FalSeedance10Lite(request) => {
         let client_ref = client.get_fal_client_ref()?;
         request.send(client_ref).await

crates/desktop/artcraft/src/core/commands/generate/common/router_video_request_to_artcraft_prompt.rs

@@ -61,6 +61,7 @@ fn video_model_to_common_model_type(model: RouterVideoModel) -> Option<CommonMod
     RouterVideoModel::Seedance2p0 => Some(CommonModelType::Seedance2p0),
     RouterVideoModel::Seedance2p0Fast => Some(CommonModelType::Seedance2p0Fast),
     RouterVideoModel::HappyHorse1p0 => Some(CommonModelType::HappyHorse1p0),
+    RouterVideoModel::MinimaxH3 => Some(CommonModelType::MinimaxH3),
     RouterVideoModel::Sora2 => Some(CommonModelType::Sora2),
     RouterVideoModel::Sora2Pro => Some(CommonModelType::Sora2Pro),
     RouterVideoModel::Veo2 => Some(CommonModelType::Veo2),

crates/schema/public/enums/src/by_table/generic_inference_jobs/inference_model_type.rs

@@ -180,6 +180,8 @@ pub enum InferenceModelType {
   Kling3p0Pro,
   #[serde(rename = "happy_horse_1p0")]
   HappyHorse1p0,
+  #[serde(rename = "minimax_h3")]
+  MinimaxH3,
   #[serde(rename = "seedance_1p0_lite")]
   Seedance10Lite,
   #[serde(rename = "seedance_1p0_pro")]
@@ -366,6 +368,7 @@ impl InferenceModelType {
       Self::Kling3p0Standard => "kling_3p0_standard",
       Self::Kling3p0Pro => "kling_3p0_pro",
       Self::HappyHorse1p0 => "happy_horse_1p0",
+      Self::MinimaxH3 => "minimax_h3",
       Self::Seedance10Lite => "seedance_1p0_lite",
       Self::Seedance10Pro => "seedance_1p0_pro",
       Self::Seedance1p5Pro => "seedance_1p5_pro",
@@ -497,6 +500,7 @@ impl InferenceModelType {
       "kling_3p0_standard" => Ok(Self::Kling3p0Standard),
       "kling_3p0_pro" => Ok(Self::Kling3p0Pro),
       "happy_horse_1p0" => Ok(Self::HappyHorse1p0),
+      "minimax_h3" => Ok(Self::MinimaxH3),
       "seedance_1p0_lite" => Ok(Self::Seedance10Lite),
       "seedance_1p0_pro" => Ok(Self::Seedance10Pro),
       "seedance_1p5_pro" => Ok(Self::Seedance1p5Pro),
@@ -632,6 +636,7 @@ impl InferenceModelType {
       Self::Kling3p0Standard,
       Self::Kling3p0Pro,
       Self::HappyHorse1p0,
+      Self::MinimaxH3,
       Self::Seedance10Lite,
       Self::Seedance10Pro,
       Self::Seedance1p5Pro,
@@ -750,6 +755,7 @@ impl InferenceModelType {
       CommonModelType::Kling3p0Standard => Self::Kling3p0Standard,
       CommonModelType::Kling3p0Pro => Self::Kling3p0Pro,
       CommonModelType::HappyHorse1p0 => Self::HappyHorse1p0,
+      CommonModelType::MinimaxH3 => Self::MinimaxH3,
       CommonModelType::Seedance10Lite => Self::Seedance10Lite,
       CommonModelType::Seedance10Pro => Self::Seedance10Pro,
       CommonModelType::Seedance1p5Pro => Self::Seedance1p5Pro,
@@ -890,6 +896,7 @@ mod tests {
       assert_serialization(InferenceModelType::Kling3p0Standard, "kling_3p0_standard");
       assert_serialization(InferenceModelType::Kling3p0Pro, "kling_3p0_pro");
       assert_serialization(InferenceModelType::HappyHorse1p0, "happy_horse_1p0");
+      assert_serialization(InferenceModelType::MinimaxH3, "minimax_h3");
       assert_serialization(InferenceModelType::Seedance10Lite, "seedance_1p0_lite");
       assert_serialization(InferenceModelType::Seedance10Pro, "seedance_1p0_pro");
       assert_serialization(InferenceModelType::Seedance1p5Pro, "seedance_1p5_pro");
@@ -1017,6 +1024,7 @@ mod tests {
       assert_eq!(InferenceModelType::Kling3p0Standard.to_str(), "kling_3p0_standard");
       assert_eq!(InferenceModelType::Kling3p0Pro.to_str(), "kling_3p0_pro");
       assert_eq!(InferenceModelType::HappyHorse1p0.to_str(), "happy_horse_1p0");
+      assert_eq!(InferenceModelType::MinimaxH3.to_str(), "minimax_h3");
       assert_eq!(InferenceModelType::Seedance10Lite.to_str(), "seedance_1p0_lite");
       assert_eq!(InferenceModelType::Seedance10Pro.to_str(), "seedance_1p0_pro");
       assert_eq!(InferenceModelType::Seedance1p5Pro.to_str(), "seedance_1p5_pro");
@@ -1146,6 +1154,7 @@ mod tests {
       assert_eq!(InferenceModelType::from_str("kling_3p0_standard").unwrap(), InferenceModelType::Kling3p0Standard);
       assert_eq!(InferenceModelType::from_str("kling_3p0_pro").unwrap(), InferenceModelType::Kling3p0Pro);
       assert_eq!(InferenceModelType::from_str("happy_horse_1p0").unwrap(), InferenceModelType::HappyHorse1p0);
+      assert_eq!(InferenceModelType::from_str("minimax_h3").unwrap(), InferenceModelType::MinimaxH3);
       assert_eq!(InferenceModelType::from_str("seedance_1p0_lite").unwrap(), InferenceModelType::Seedance10Lite);
       assert_eq!(InferenceModelType::from_str("seedance_1p0_pro").unwrap(), InferenceModelType::Seedance10Pro);
       assert_eq!(InferenceModelType::from_str("seedance_1p5_pro").unwrap(), InferenceModelType::Seedance1p5Pro);

crates/schema/public/enums/src/common/generation/common_model_type.rs

@@ -151,6 +151,8 @@ pub enum CommonModelType {
   Kling3p0Pro,
   #[serde(rename = "happy_horse_1p0")]
   HappyHorse1p0,
+  #[serde(rename = "minimax_h3")]
+  MinimaxH3,
   #[serde(rename = "seedance_1p0_lite")]
   Seedance10Lite,
   #[serde(rename = "seedance_1p0_pro")]
@@ -321,6 +323,7 @@ impl CommonModelType {
       Self::Kling3p0Standard => "kling_3p0_standard",
       Self::Kling3p0Pro => "kling_3p0_pro",
       Self::HappyHorse1p0 => "happy_horse_1p0",
+      Self::MinimaxH3 => "minimax_h3",
       Self::Seedance10Lite => "seedance_1p0_lite",
       Self::Seedance10Pro => "seedance_1p0_pro",
       Self::Seedance1p5Pro => "seedance_1p5_pro",
@@ -435,6 +438,7 @@ impl CommonModelType {
       "kling_3p0_standard" => Ok(Self::Kling3p0Standard),
       "kling_3p0_pro" => Ok(Self::Kling3p0Pro),
       "happy_horse_1p0" => Ok(Self::HappyHorse1p0),
+      "minimax_h3" => Ok(Self::MinimaxH3),
       "seedance_1p0_lite" => Ok(Self::Seedance10Lite),
       "seedance_1p0_pro" => Ok(Self::Seedance10Pro),
       "seedance_1p5_pro" => Ok(Self::Seedance1p5Pro),
@@ -553,6 +557,7 @@ impl CommonModelType {
       Self::Kling3p0Standard,
       Self::Kling3p0Pro,
       Self::HappyHorse1p0,
+      Self::MinimaxH3,
       Self::Seedance10Lite,
       Self::Seedance10Pro,
       Self::Seedance1p5Pro,
@@ -668,6 +673,7 @@ impl CommonModelType {
       Self::Kling3p0Standard => CommonModelClass::Video,
       Self::Kling3p0Pro => CommonModelClass::Video,
       Self::HappyHorse1p0 => CommonModelClass::Video,
+      Self::MinimaxH3 => CommonModelClass::Video,
       Self::Seedance10Lite => CommonModelClass::Video,
       Self::Seedance10Pro => CommonModelClass::Video,
       Self::Seedance1p5Pro => CommonModelClass::Video,
@@ -792,6 +798,7 @@ mod tests {
       assert_serialization(CommonModelType::Kling3p0Standard, "kling_3p0_standard");
       assert_serialization(CommonModelType::Kling3p0Pro, "kling_3p0_pro");
       assert_serialization(CommonModelType::HappyHorse1p0, "happy_horse_1p0");
+      assert_serialization(CommonModelType::MinimaxH3, "minimax_h3");
       assert_serialization(CommonModelType::Seedance10Lite, "seedance_1p0_lite");
       assert_serialization(CommonModelType::Seedance10Pro, "seedance_1p0_pro");
       assert_serialization(CommonModelType::Seedance1p5Pro, "seedance_1p5_pro");
@@ -901,6 +908,7 @@ mod tests {
       assert_eq!(CommonModelType::Kling3p0Standard.to_str(), "kling_3p0_standard");
       assert_eq!(CommonModelType::Kling3p0Pro.to_str(), "kling_3p0_pro");
       assert_eq!(CommonModelType::HappyHorse1p0.to_str(), "happy_horse_1p0");
+      assert_eq!(CommonModelType::MinimaxH3.to_str(), "minimax_h3");
       assert_eq!(CommonModelType::Seedance10Lite.to_str(), "seedance_1p0_lite");
       assert_eq!(CommonModelType::Seedance10Pro.to_str(), "seedance_1p0_pro");
       assert_eq!(CommonModelType::Seedance1p5Pro.to_str(), "seedance_1p5_pro");
@@ -1012,6 +1020,7 @@ mod tests {
       assert_eq!(CommonModelType::from_str("kling_3p0_standard").unwrap(), CommonModelType::Kling3p0Standard);
       assert_eq!(CommonModelType::from_str("kling_3p0_pro").unwrap(), CommonModelType::Kling3p0Pro);
       assert_eq!(CommonModelType::from_str("happy_horse_1p0").unwrap(), CommonModelType::HappyHorse1p0);
+      assert_eq!(CommonModelType::from_str("minimax_h3").unwrap(), CommonModelType::MinimaxH3);
       assert_eq!(CommonModelType::from_str("seedance_1p0_lite").unwrap(), CommonModelType::Seedance10Lite);
       assert_eq!(CommonModelType::from_str("seedance_1p0_pro").unwrap(), CommonModelType::Seedance10Pro);
       assert_eq!(CommonModelType::from_str("seedance_1p5_pro").unwrap(), CommonModelType::Seedance1p5Pro);
@@ -1071,7 +1080,7 @@ mod tests {
     #[test]
     fn all_variants() {
       let mut variants = CommonModelType::all_variants();
-      assert_eq!(variants.len(), 99);
+      assert_eq!(variants.len(), 100);
       // Image models
       assert_eq!(variants.pop_first(), Some(CommonModelType::Flux1Dev));
       assert_eq!(variants.pop_first(), Some(CommonModelType::Flux1Schnell));
@@ -1123,6 +1132,7 @@ mod tests {
       assert_eq!(variants.pop_first(), Some(CommonModelType::Kling3p0Standard));
       assert_eq!(variants.pop_first(), Some(CommonModelType::Kling3p0Pro));
       assert_eq!(variants.pop_first(), Some(CommonModelType::HappyHorse1p0));
+      assert_eq!(variants.pop_first(), Some(CommonModelType::MinimaxH3));
       assert_eq!(variants.pop_first(), Some(CommonModelType::Seedance10Lite));
       assert_eq!(variants.pop_first(), Some(CommonModelType::Seedance10Pro));
       assert_eq!(variants.pop_first(), Some(CommonModelType::Seedance1p5Pro));

crates/schema/public/enums/src/common/generation/common_video_model.rs

@@ -41,6 +41,9 @@ pub enum CommonVideoModel {
   #[serde(rename = "happy_horse_1p0")]
   HappyHorse1p0,
 
+  #[serde(rename = "minimax_h3")]
+  MinimaxH3,
+
   #[serde(rename = "seedance_1p0_lite")]
   Seedance10Lite,
 
@@ -139,6 +142,7 @@ impl CommonVideoModel {
       Self::Kling3p0Standard => CommonModelType::Kling3p0Standard,
       Self::Kling3p0Pro => CommonModelType::Kling3p0Pro,
       Self::HappyHorse1p0 => CommonModelType::HappyHorse1p0,
+      Self::MinimaxH3 => CommonModelType::MinimaxH3,
       Self::Seedance10Lite => CommonModelType::Seedance10Lite,
       Self::Seedance1p5Pro => CommonModelType::Seedance1p5Pro,
       Self::Seedance2p0 => CommonModelType::Seedance2p0,
@@ -188,6 +192,7 @@ mod tests {
     assert_serialization(CommonVideoModel::Kling3p0Standard, "kling_3p0_standard");
     assert_serialization(CommonVideoModel::Kling3p0Pro, "kling_3p0_pro");
     assert_serialization(CommonVideoModel::HappyHorse1p0, "happy_horse_1p0");
+    assert_serialization(CommonVideoModel::MinimaxH3, "minimax_h3");
     assert_serialization(CommonVideoModel::Seedance10Lite, "seedance_1p0_lite");
     assert_serialization(CommonVideoModel::Seedance1p5Pro, "seedance_1p5_pro");
     assert_serialization(CommonVideoModel::Seedance2p0, "seedance_2p0");
@@ -230,6 +235,7 @@ mod tests {
       ("kling_3p0_standard", CommonVideoModel::Kling3p0Standard),
       ("kling_3p0_pro", CommonVideoModel::Kling3p0Pro),
       ("happy_horse_1p0", CommonVideoModel::HappyHorse1p0),
+      ("minimax_h3", CommonVideoModel::MinimaxH3),
       ("seedance_1p0_lite", CommonVideoModel::Seedance10Lite),
       ("seedance_1p5_pro", CommonVideoModel::Seedance1p5Pro),
       ("seedance_2p0", CommonVideoModel::Seedance2p0),
@@ -279,6 +285,7 @@ mod tests {
       CommonVideoModel::Kling3p0Standard,
       CommonVideoModel::Kling3p0Pro,
       CommonVideoModel::HappyHorse1p0,
+      CommonVideoModel::MinimaxH3,
       CommonVideoModel::Seedance10Lite,
       CommonVideoModel::Seedance1p5Pro,
       CommonVideoModel::Seedance2p0,
@@ -327,6 +334,7 @@ mod tests {
       (CommonVideoModel::Kling3p0Standard, CommonModelType::Kling3p0Standard),
       (CommonVideoModel::Kling3p0Pro, CommonModelType::Kling3p0Pro),
       (CommonVideoModel::HappyHorse1p0, CommonModelType::HappyHorse1p0),
+      (CommonVideoModel::MinimaxH3, CommonModelType::MinimaxH3),
       (CommonVideoModel::Seedance10Lite, CommonModelType::Seedance10Lite),
       (CommonVideoModel::Seedance1p5Pro, CommonModelType::Seedance1p5Pro),
       (CommonVideoModel::Seedance2p0, CommonModelType::Seedance2p0),

crates/service/web/storyteller_web/src/configs/omni_gen/video_models/by_type/minimax_video_models.rs

@@ -0,0 +1,50 @@
+use artcraft_api_defs::omni_gen::models::omni_gen_video_models::OmniGenVideoModelDetails;
+use enums::common::generation::common_aspect_ratio::CommonAspectRatio;
+use enums::common::generation::common_resolution::CommonResolution;
+use enums::common::generation::common_video_model::CommonVideoModel;
+use enums::common::generation::model_creator::ModelCreator;
+
+/// MiniMax (Hailuo) video models.
+pub fn minimax_video_models() -> Vec<OmniGenVideoModelDetails> {
+  let mut models = Vec::new();
+
+  models.push(OmniGenVideoModelDetails {
+    model: CommonVideoModel::MinimaxH3,
+    model_creator: Some(ModelCreator::Hailuo),
+    full_name: Some("MiniMax H3".to_string()),
+    text_prompt_supported: Some(true),
+    text_prompt_max_length: Some(7000),
+    starting_keyframe_supported: Some(true),
+    ending_keyframe_supported: Some(true),
+    image_references_supported: Some(true),
+    image_references_max: Some(9),
+    video_references_supported: Some(true),
+    video_references_max: Some(3),
+    video_references_max_total_duration_seconds: Some(15),
+    audio_references_supported: Some(true),
+    audio_references_max: Some(3),
+    audio_references_max_total_duration_seconds: Some(15),
+    aspect_ratio_options: Some(vec![
+      CommonAspectRatio::WideTwentyOneByNine,
+      CommonAspectRatio::WideSixteenByNine,
+      CommonAspectRatio::WideFourByThree,
+      CommonAspectRatio::Square,
+      CommonAspectRatio::TallThreeByFour,
+      CommonAspectRatio::TallNineBySixteen,
+    ]),
+    aspect_ratio_default: Some(CommonAspectRatio::WideSixteenByNine),
+    // The model renders 768P or 2K; 720p and below land on 768P, 1080p and
+    // above land on 2K.
+    resolution_options: Some(vec![
+      CommonResolution::SevenTwentyP,
+      CommonResolution::TwoK,
+    ]),
+    resolution_default: Some(CommonResolution::TwoK),
+    duration_seconds_min: Some(5),
+    duration_seconds_max: Some(15),
+    duration_seconds_default: Some(5),
+    ..Default::default()
+  });
+
+  models
+}

crates/service/web/storyteller_web/src/configs/omni_gen/video_models/by_type/mod.rs

@@ -1,6 +1,7 @@
 pub mod grok_video_models;
 pub mod happy_horse_video_models;
 pub mod kling_video_models;
+pub mod minimax_video_models;
 pub mod seedance_1x_video_models;
 pub mod seedance_2p0_video_models;
 pub mod seedance_2p5_video_models;

crates/service/web/storyteller_web/src/configs/omni_gen/video_models/video_models.rs

@@ -6,6 +6,7 @@ use once_cell::sync::Lazy;
 use super::by_type::grok_video_models::grok_video_models;
 use super::by_type::happy_horse_video_models::happy_horse_video_models;
 use super::by_type::kling_video_models::{kling_disabled_video_models, kling_video_models};
+use super::by_type::minimax_video_models::minimax_video_models;
 use super::by_type::seedance_1x_video_models::{seedance_1p0_video_models, seedance_1p5_video_models};
 use super::by_type::seedance_2p0_video_models::seedance_2p0_video_models;
 use super::by_type::seedance_2p5_video_models::seedance_2p5_video_models;
@@ -30,6 +31,7 @@ fn build_omni_gen_video_models() -> Vec<OmniGenVideoModelDetails> {
   models.extend(happy_horse_video_models());
   models.extend(kling_video_models());
   models.extend(kling_disabled_video_models());
+  models.extend(minimax_video_models());
   models.extend(seedance_1p0_video_models());
   models.extend(seedance_1p5_video_models());
   models.extend(seedance_2p0_video_models());
@@ -99,6 +101,10 @@ fn build_omni_gen_video_model_providers() -> Vec<OmniGenVideoModelProviderDetail
         model: CommonVideoModel::ViduQ3Turbo,
         overrides: None,
       },
+      OmniGenVideoProviderModelDetails {
+        model: CommonVideoModel::MinimaxH3,
+        overrides: None,
+      },
       OmniGenVideoProviderModelDetails {
         model: CommonVideoModel::Kling16Pro,
         overrides: None,

crates/service/web/storyteller_web/src/http_server/endpoints/generate/cost_estimate/video/estimate_video_cost_handler.rs

@@ -155,6 +155,7 @@ fn map_video_model(model: CommonVideoModel) -> Result<RouterVideoModel, HandlerE
     CommonVideoModel::Seedance2p0BytePlusUltraMini => RouterVideoModel::Seedance2p0BytePlusUltraMini,
     CommonVideoModel::Seedance2p5Preview => RouterVideoModel::Seedance2p5Preview,
     CommonVideoModel::HappyHorse1p0 => RouterVideoModel::HappyHorse1p0,
+    CommonVideoModel::MinimaxH3 => RouterVideoModel::MinimaxH3,
     CommonVideoModel::Sora2 => RouterVideoModel::Sora2,
     CommonVideoModel::Sora2Pro => RouterVideoModel::Sora2Pro,
     CommonVideoModel::Veo2 => RouterVideoModel::Veo2,

crates/service/web/storyteller_web/src/http_server/endpoints/omni_gen/cost/video/omni_gen_video_cost_handler.rs

@@ -53,6 +53,7 @@ mod tests {
   use actix_http::StatusCode;
   use actix_web::test::TestRequest;
   use actix_web::ResponseError;
+  use enums::common::generation::common_resolution::CommonResolution;
   use enums::common::generation::common_video_model::CommonVideoModel;
 
   use super::*;
@@ -74,11 +75,29 @@ mod tests {
       assert!(response.cost_in_credits.unwrap() > 0);
     }
 
+    /// MiniMax H3 defaults (5s, 2K) quote at 150 credits; the 768P tier
+    /// (720p and below) quotes at 92 for 5s.
+    #[tokio::test]
+    async fn minimax_h3_quotes_by_resolution_tier() {
+      let default_quote = post_cost_request(base_request(CommonVideoModel::MinimaxH3))
+        .await
+        .expect("minimax h3 default cost estimate should succeed");
+      assert_eq!(default_quote.cost_in_credits, Some(150));
+
+      let mut low_res = base_request(CommonVideoModel::MinimaxH3);
+      low_res.resolution = Some(CommonResolution::SevenTwentyP);
+      let low_res_quote = post_cost_request(low_res)
+        .await
+        .expect("minimax h3 768P-tier cost estimate should succeed");
+      assert_eq!(low_res_quote.cost_in_credits, Some(92));
+    }
+
     #[tokio::test]
     async fn bare_model_gets_a_quote_for_representative_models() {
       for model in [
         CommonVideoModel::GrokImagineVideo,
         CommonVideoModel::Kling3p0Pro,
+        CommonVideoModel::MinimaxH3,
         CommonVideoModel::Seedance2p0,
         CommonVideoModel::Sora2,
         CommonVideoModel::Veo3p1,