Previous value: -"Optional text description of the desired animation (e.g., \"walking\", \"attack slash\"). When omitted, the motion is derived purely from the keyframes."New value: +"Optional text description of the desired animation, e.g. \"walking\", \"attack slash\". When omitted, the motion is derived purely from the keyframes. When provided, describe exactly and unambiguously what the character should do. Specific or complex actions are fine; there is no need to simplify them. Do not over-describe, though: too much detail can harm the animation, and an action the model already knows should be named, not decomposed into its steps (\"walking\", never \"move the left foot forward, then the right foot\"). Do not restate what the keyframes already show (the character, its appearance and equipment, the art style, the background, the lighting, the camera), and leave frame count and timing to the frames and duration fields. Negative phrasing (\"no background\", \"do not move the camera\", \"without a weapon\") works only on hydra. On forge and forge-pixel it backfires: naming something you do not want makes it more likely to appear, so \"without a weapon\" tends to produce a weapon. On those models never phrase anything negatively; state only what should happen, and control everything else through the keyframes and the other fields."

Previous value: -"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s, shortest duration 3s, so 9 credits minimum · Most capable model, generates audio\n- \"forge\" (Forge): 1.5 credits/s, min charge 4 credits · Best for basic animations and relatively simple sprites\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min charge 4 credits · Best for low-res pixel art animations Default: \"hydra\"."New value: +"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s, shortest duration 3s, so 9 credits minimum · Most capable all-around model, generates audio\n- \"forge\" (Forge): 1.5 credits/s, min charge 4 credits · Use only for basic animations and simple sprites. Multiple tries might be needed\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min charge 4 credits · Best for low-res pixel art animations Default: \"hydra\"."

Previous value: -"Payload for generating an animated spritesheet that interpolates through up to three fixed keyframes (initial / middle / final). Runs on the Forge family - the only models supporting a middle keyframe. Input images can be provided in base64 or URL. At least one of initial_image or middle_image must be provided."New value: +"Payload for generating an animated spritesheet that interpolates through up to three fixed keyframes (initial / middle / final). Runs on hydra (default), forge or forge-pixel - the models supporting a middle keyframe. Input images can be provided in base64 or URL. At least one of initial_image or middle_image must be provided."

Previous value: -"Crop sprite frames to fit content. Results in smaller spritesheets but inconsistent frame sizes across different animations. Default: false."New value: +"Crop sprite frames to fit content. Results in smaller spritesheets but inconsistent frame sizes across different animations. Default: true."

Previous value: -falseNew value: +true

Previous value: -"Duration in seconds. Available values depend on the model:\n- hydra: 3, 3.5, 4, 4.5, 5\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4 Default: 3."New value: +"Duration in seconds. Available values depend on the model:\n- hydra: 3, 3.5, 4, 4.5, 5\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 Default: 3."

Previous value: -"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\n- \"blitz\" (Blitz): 1.9 credits/s, min 4 · LEGACY - scheduled for removal, do not use for new work\n- \"eagle\" (Eagle): 2.6 credits/s, min 4 · LEGACY - scheduled for removal, do not use for new work\n- \"eagle-audio\" (Eagle with Audio): 3.1 credits/s, min 4 · LEGACY - scheduled for removal, do not use for new work\nLegacy aliases: \"standard\" → blitz.\nModels marked LEGACY still work for existing integrations but will be removed; pick a current model for anything new. Default: \"forge\"."New value: +"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s, shortest duration 3s, so 9 credits minimum · Most capable model, generates audio\n- \"forge\" (Forge): 1.5 credits/s, min charge 4 credits · Best for basic animations and relatively simple sprites\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min charge 4 credits · Best for low-res pixel art animations Default: \"hydra\"."

Previous value: -[
-  "hydra",
-  "forge",
-  "forge-pixel",
-  "blitz",
-  "standard",
-  "eagle",
-  "eagle-audio"
-]New value: +[
+  "hydra",
+  "forge",
+  "forge-pixel"
+]

Previous value: -"forge"New value: +"hydra"

Previous value: -"Optional client-provided identifier, unique per request. Re-sending the same request_id returns the existing job instead of generating again. Also usable with the results endpoint."New value: +"Optional client-provided identifier, unique per request. Re-sending the same request_id returns the existing job instead of generating again. Also usable as the request_id filter of listGenerations."

Previous value: -"Duration in seconds. Available values depend on the model:\n- hydra: 3, 3.5, 4, 4.5, 5\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 Default: 3."New value: +"Duration in seconds. Available values depend on the model:\n- hydra: 3, 3.5, 4, 4.5, 5\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4 Default: 3."

Previous value: -"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s, min 4\n- \"blitz\" (Blitz): 1.9 credits/s, min 4\n- \"eagle\" (Eagle): 2.6 credits/s, min 4\n- \"eagle-audio\" (Eagle with Audio): 3.1 credits/s, min 4\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\nLegacy aliases: \"standard\" → blitz. Default: \"forge\"."New value: +"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\n- \"blitz\" (Blitz): 1.9 credits/s, min 4 · LEGACY - scheduled for removal, do not use for new work\n- \"eagle\" (Eagle): 2.6 credits/s, min 4 · LEGACY - scheduled for removal, do not use for new work\n- \"eagle-audio\" (Eagle with Audio): 3.1 credits/s, min 4 · LEGACY - scheduled for removal, do not use for new work\nLegacy aliases: \"standard\" → blitz.\nModels marked LEGACY still work for existing integrations but will be removed; pick a current model for anything new. Default: \"forge\"."

Previous value: -[
-  "hydra",
-  "blitz",
-  "standard",
-  "eagle",
-  "eagle-audio",
-  "forge",
-  "forge-pixel"
-]New value: +[
+  "hydra",
+  "forge",
+  "forge-pixel",
+  "blitz",
+  "standard",
+  "eagle",
+  "eagle-audio"
+]

Previous value: -"Duration in seconds. Available values depend on the model:\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4 Default: 3."New value: +"Duration in seconds. Available values depend on the model:\n- hydra: 3, 3.5, 4, 4.5, 5\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 Default: 3."

Previous value: -32New value: +0

Previous value: -4New value: +36

Previous value: -"Model to use. Available models:\n- \"blitz\" (Blitz): Visual Quality: 4/10 · Motion Stability: 8/10 · 1.9 credits/s, min 4\n- \"eagle\" (Eagle): Visual Quality: 8/10 · Motion Stability: 5/10 · 2.6 credits/s, min 4\n- \"eagle-audio\" (Eagle with Audio): Visual Quality: 8/10 · Motion Stability: 5/10 · 3.1 credits/s, min 4\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\nLegacy aliases: \"standard\" → blitz. Default: \"forge\"."New value: +"Model to use. Available models:\n- \"hydra\" (Hydra): 3 credits/s, min 4\n- \"blitz\" (Blitz): 1.9 credits/s, min 4\n- \"eagle\" (Eagle): 2.6 credits/s, min 4\n- \"eagle-audio\" (Eagle with Audio): 3.1 credits/s, min 4\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\nLegacy aliases: \"standard\" → blitz. Default: \"forge\"."

Previous value: -[
-  "blitz",
-  "standard",
-  "eagle",
-  "eagle-audio",
-  "forge",
-  "forge-pixel"
-]New value: +[
+  "hydra",
+  "blitz",
+  "standard",
+  "eagle",
+  "eagle-audio",
+  "forge",
+  "forge-pixel"
+]

Previous value: -"Augment the prompt behind the scenes. Disable to have more control. Default: true."New value: +"Augment the prompt behind the scenes. Disable to have more control. Incompatible with automatic framing: false requires margin_ratio_mode \"manual\" (with margin_ratio_horizontal and/or margin_ratio_vertical) or \"none\". Because margin_ratio_mode defaults to \"auto\", sending augment_prompt false on its own fails with HTTP 400. Default: true."

Removed value: -true

Previous value: -"Augment the prompt behind the scenes. Disable to have more control."New value: +"Augment the prompt behind the scenes. Disable to have more control. Default: true."

Removed value: -false

Previous value: -"Crop sprite frames to fit content. Results in smaller spritesheets but inconsistent frame sizes across different animations."New value: +"Crop sprite frames to fit content. Results in smaller spritesheets but inconsistent frame sizes across different animations. Default: false."

Removed value: -3

Previous value: -"Duration in seconds. Available values depend on the model:\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4"New value: +"Duration in seconds. Available values depend on the model:\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4 Default: 3."

Removed value: -0

Previous value: -"Size of each frame in pixels (width and height). 0 is for maximum resolution. -1 is for AI 1.5x upscaling. -9 is for matching the size and position of the input frame. Accepted values: 32, 64, 96, 128, 192, 256, 384, 0, -1, -9."New value: +"Size of each frame in pixels (width and height). 0 is for maximum resolution. -1 is for AI 1.5x upscaling. -9 is for matching the size and position of the input frame. Accepted values: 32, 64, 96, 128, 192, 256, 384, 0, -1, -9. Default: 0."

Removed value: -36

Previous value: -"Number of frames in the output spritesheet. Accepted values: 4, 9, 16, 25, 36, 49, 64."New value: +"Number of frames in the output spritesheet. Accepted values: 4, 9, 16, 25, 36, 49, 64. Default: 36."

Removed value: -false

Previous value: -"When true, generates an animated GIF from the spritesheet and returns it in gif_url. Disabled by default to reduce response time."New value: +"When true, generates an animated GIF from the spritesheet and returns it in gif_url. Disabled by default to reduce response time. Default: false."

Removed value: -"sprite"

Previous value: -"Type of sprite being animated. Affects generation parameters and styling."New value: +"Type of sprite being animated. Affects generation parameters and styling. Default: \"sprite\"."

Removed value: -false

Previous value: -"When true, extracts each frame from the spritesheet as an individual image and returns the URLs in individual_frame_urls."New value: +"When true, extracts each frame from the spritesheet as an individual image and returns the URLs in individual_frame_urls. Default: false."

Removed value: -true

Previous value: -"Trim the animation at the beginning or end to create a seamless loop. Not guaranteed to produce a perfect loop."New value: +"Trim the animation at the beginning or end to create a seamless loop. Not guaranteed to produce a perfect loop. Default: true."

Added value: +true

Previous value: -"Deprecated - prefer margin_ratio_horizontal / margin_ratio_vertical. Amount of padding around the sprite as a ratio (0.0 to 1.0), applied to both axes (equivalent to setting both per-axis params to this value). Only used when margin_ratio_mode is \"manual\". Cannot be combined with the per-axis params: providing both fails with HTTP 400."New value: +"Deprecated: prefer margin_ratio_horizontal / margin_ratio_vertical. Amount of padding around the sprite as a ratio (0.0 to 1.0). Sets both axes to this value. A per-axis value, when also given, overrides this for that axis. Supplying any margin value selects margin_ratio_mode \"manual\" unless margin_ratio_mode is set explicitly."

Previous value: -"Horizontal padding around the sprite as a ratio (0.0 to 1.0). Only used when margin_ratio_mode is \"manual\". Useful for animations that extend sideways (e.g., sword slashes, punches). Cannot be combined with the legacy margin_ratio param."New value: +"Horizontal padding around the sprite as a ratio (0.0 to 1.0). Useful for animations that extend sideways (e.g., sword slashes, punches). Supplying a value selects margin_ratio_mode \"manual\" unless margin_ratio_mode is set explicitly; overrides the legacy margin_ratio on this axis."

Removed value: -"auto"

Previous value: -"Controls how margins are applied around the sprite. \"manual\" requires margin_ratio_horizontal and/or margin_ratio_vertical (or the legacy margin_ratio); sending \"manual\" with no margin value fails with HTTP 400."New value: +"Controls how margins are applied around the sprite. Omit it and send margin_ratio_horizontal / margin_ratio_vertical to get \"manual\" automatically. \"manual\" requires margin_ratio_horizontal and/or margin_ratio_vertical (or the legacy margin_ratio); sending \"manual\" with no margin value fails with HTTP 400. Sending \"auto\" or \"none\" explicitly together with a margin value fails with HTTP 400 (the value would be ignored). Default: \"auto\"."

Previous value: -"Vertical padding around the sprite as a ratio (0.0 to 1.0). Only used when margin_ratio_mode is \"manual\". Useful for animations that extend up or down (e.g., jumps). Cannot be combined with the legacy margin_ratio param."New value: +"Vertical padding around the sprite as a ratio (0.0 to 1.0). Useful for animations that extend up or down (e.g., jumps). Supplying a value selects margin_ratio_mode \"manual\" unless margin_ratio_mode is set explicitly; overrides the legacy margin_ratio on this axis."

Removed value: -"forge"

Previous value: -"Model to use. Available models:\n- \"blitz\" (Blitz): Visual Quality: 4/10 · Motion Stability: 8/10 · 1.9 credits/s, min 4\n- \"eagle\" (Eagle): Visual Quality: 8/10 · Motion Stability: 5/10 · 2.6 credits/s, min 4\n- \"eagle-audio\" (Eagle with Audio): Visual Quality: 8/10 · Motion Stability: 5/10 · 3.1 credits/s, min 4\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\nLegacy aliases: \"standard\" → blitz."New value: +"Model to use. Available models:\n- \"blitz\" (Blitz): Visual Quality: 4/10 · Motion Stability: 8/10 · 1.9 credits/s, min 4\n- \"eagle\" (Eagle): Visual Quality: 8/10 · Motion Stability: 5/10 · 2.6 credits/s, min 4\n- \"eagle-audio\" (Eagle with Audio): Visual Quality: 8/10 · Motion Stability: 5/10 · 3.1 credits/s, min 4\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\nLegacy aliases: \"standard\" → blitz. Default: \"forge\"."

Removed value: -false

Previous value: -"When true, also returns the spritesheet with background intact (before background removal). Useful for manually fixing background removal issues. The with-background spritesheet URL will be in spritesheet_with_background_url."New value: +"When true, also returns the spritesheet with background intact (before background removal). Useful for manually fixing background removal issues. The with-background spritesheet URL will be in spritesheet_with_background_url. Default: false."

Previous value: -"Controls how margins are applied around the sprite."New value: +"Controls how margins are applied around the sprite. \"manual\" requires margin_ratio_horizontal and/or margin_ratio_vertical (or the legacy margin_ratio); sending \"manual\" with no margin value fails with HTTP 400."

Added value: +false

Added value: +false

Added value: +3

Added value: +3

Added value: +"sprite"

Previous value: -"Payload for generating an animated spritesheet that interpolates through up to three fixed keyframes (initial / middle / final). Runs on the Forge family — the only models supporting a middle keyframe. Input images can be provided in base64 or URL. At least one of initial_image or middle_image must be provided."New value: +"Payload for generating an animated spritesheet that interpolates through up to three fixed keyframes (initial / middle / final). Runs on the Forge family - the only models supporting a middle keyframe. Input images can be provided in base64 or URL. At least one of initial_image or middle_image must be provided."

Previous value: -"Deprecated — prefer margin_ratio_horizontal / margin_ratio_vertical. Amount of padding around the sprite as a ratio (0.0 to 1.0), applied to both axes (equivalent to setting both per-axis params to this value). Only used when margin_ratio_mode is \"manual\". Cannot be combined with the per-axis params: providing both fails with HTTP 400."New value: +"Deprecated - prefer margin_ratio_horizontal / margin_ratio_vertical. Amount of padding around the sprite as a ratio (0.0 to 1.0), applied to both axes (equivalent to setting both per-axis params to this value). Only used when margin_ratio_mode is \"manual\". Cannot be combined with the per-axis params: providing both fails with HTTP 400."

Previous value: -"Optional client-provided identifier for this request. Use this to retrieve results later via the results endpoint."New value: +"Optional client-provided identifier, unique per request. Re-sending the same request_id returns the existing job instead of generating again. Also usable with the results endpoint."

Previous value: -"Payload for generating an animated spritesheet that interpolates through up to three fixed keyframes (initial / middle / final). Runs exclusively on the Forge model. Input images can be provided in base64 or URL. At least one of initial_image or middle_image must be provided."New value: +"Payload for generating an animated spritesheet that interpolates through up to three fixed keyframes (initial / middle / final). Runs on the Forge family — the only models supporting a middle keyframe. Input images can be provided in base64 or URL. At least one of initial_image or middle_image must be provided."

Previous value: -"Animation length in seconds. This endpoint always runs on the Forge model, so only Forge's durations apply — the source of truth is MODEL_PRICING (credits.js), surfaced via /credits/costs."New value: +"Duration in seconds. Available values depend on the model:\n- blitz: 1.2, 1.5, 2, 2.5, 3, 3.5, 4\n- eagle: 1, 2, 3, 4\n- eagle-audio: 1, 2, 3, 4\n- forge: 1, 1.5, 2, 2.5, 3, 3.5, 4\n- forge-pixel: 1, 1.5, 2, 2.5, 3, 3.5, 4"

Previous value: -[
-  "sprite",
-  "sprite-vfx",
-  "ui_asset"
-]New value: +[
+  "sprite",
+  "sprite-vfx",
+  "item-icon",
+  "ui_asset",
+  "logo",
+  "sprite-tiling-horizontal",
+  "sprite-tiling-vertical",
+  "parallax_layer",
+  "tile",
+  "texture",
+  "portrait",
+  "card-art"
+]

Added value: +{
+  "default": "forge",
+  "description": "Model to use. Available models:\n- \"blitz\" (Blitz): Visual Quality: 4/10 · Motion Stability: 8/10 · 1.9 credits/s, min 4\n- \"eagle\" (Eagle): Visual Quality: 8/10 · Motion Stability: 5/10 · 2.6 credits/s, min 4\n- \"eagle-audio\" (Eagle with Audio): Visual Quality: 8/10 · Motion Stability: 5/10 · 3.1 credits/s, min 4\n- \"forge\" (Forge): 1.5 credits/s, min 4\n- \"forge-pixel\" (Forge Pixel): 1.5 credits/s, min 4\nLegacy aliases: \"standard\" → blitz.",
+  "enum": [
+    "blitz",
+    "standard",
+    "eagle",
+    "eagle-audio",
+    "forge",
+    "forge-pixel"
+  ],
+  "example": "forge",
+  "type": "string"
+}