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Supported avatar types

studio_avatar, digital_twin, photo_avatar, image (arbitrary), prompt

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Exclusive features

  • motion_prompt — a natural-language string controlling body motion and hand gestures (e.g. "walk towards the camera slowly"). Photo avatars and arbitrary images only.
  • expressiveness — controls energy and range of movement: high, medium, or low. Photo avatars and arbitrary images only. Defaults to low.
  • Arbitrary image support — animate any image by setting type: "image", with no registered avatar required.

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Example

Because Avatar IV is the default, you can omit engine entirely: 
{
  "type": "avatar",
  "avatar_id": "YOUR_LOOK_ID",
  "script": "Hello from Avatar IV.",
  "voice_id": "YOUR_VOICE_ID",
  "resolution": "1080p"
}
engine is omitted — Avatar IV is selected automatically. You can also request it explicitly with "engine": { "type": "avatar_iv" }.
For a full walkthrough of creating a Digital Twin video and polling for completion, see the Digital Twin guide. To compare engines, see Models; for the highest-fidelity motion, see Avatar V.