Models and inputs
Choose a public Seedance model. The API selects the workflow from the media URLs you provide.
Use one of the public model IDs below. Seeddance keeps provider model names internal, so they can change without affecting the public API.
| Model | Typical use | Image inputs | Video reference | Quality |
|---|---|---|---|---|
seedance-1.0-pro-fast | Fast generation with lower credit use | Up to 1 | No | 480p to 1080p |
seedance-1.5-pro | Start and end frame control | Up to 2 | No | 480p to 1080p |
seedance-2.0 | High-quality multimodal generation | Up to 9 | Up to 1 | 480p to 1080p |
seedance-2.0-fast | Faster Seedance 2.0 generation | Up to 9 | Up to 1 | 480p to 1080p |
seedance-2.0-mini | Seedance 2.0 with lower credit use | Up to 9 | Up to 1 | 480p to 720p |
Your account plan determines which models and resolutions you can use. The API returns a 403 or 422 error before it creates a task with an unsupported combination.
Automatic generation mode
Do not send a mode or provider model ID. Seeddance selects the workflow from image_urls and video_urls:
- With no media, Seeddance uses text-to-video generation.
- With one image, Seeddance uses image-to-video and treats the image as the start frame.
- With two images, Seeddance uses first and last frame generation when the model supports it.
- With three or more images, Seedance 2.0 models use reference-to-video generation.
- With one video, Seedance 2.0 models use reference-to-video generation.
All media must use public HTTPS URLs. Seeddance rejects localhost, private network addresses, embedded credentials, and hostnames it cannot resolve.
Parameters
Each model supports its own duration, quality, and aspect_ratio values. The API checks these values against the selected model and your account plan. generate_audio works only with models that support synchronized audio.
Seedance 2.5: Coming soon
The API does not support Seedance 2.5 yet. Requests that send seedance-2.5
return 422 model_not_available. We will add the model to the public enum
once provider access becomes available.