# Video models

What Seedance 2.0, 2.0 Fast and 2.0 Mini accept and produce.

The three models share one API key and one set of request parameters; put the model ID in the `model` field of the body.

## Available models

| Model | Model ID | Resolution | Duration (s) |
| --- | --- | --- | --- |
| Seedance 2.0 | `dreamina-seedance-2-0-260128` | 480p · 720p · 1080p | 4–15, default 5 |
| Seedance 2.0 Fast | `dreamina-seedance-2-0-fast-260128` | 480p · 720p | 4–15, default 5 |
| Seedance 2.0 Mini | `dreamina-seedance-2-0-mini-260615` | 480p · 720p | 4–15, default 5 |

Seedance 2.0 Fast and Seedance 2.0 Mini accept only `480p` or `720p` as `resolution`.

## Inputs

- A request has at most 16 `content` items: a text prompt, plus up to 9 images, 3 reference videos and 3 reference audio clips, with at most 15 materials in all.
- A first-frame request takes one image and a first-and-last-frame request two, with at most one `first_frame` and one `last_frame`.
- Each reference video or audio clip lasts 2–15 seconds; the videos together and the audio clips together each stay within 15 seconds. Reference audio needs a reference image or video.
- Images and audio can be HTTPS links, `asset://` references or base64 data URIs; videos can be HTTPS links or `asset://` references. See [Generate a video](./api-docs-en-video-generate.md#sources).

## Outputs

| Parameter | Values | Default |
| --- | --- | --- |
| `duration` | Whole seconds from 4 to 15 | `5` |
| `resolution` | `480p` · `720p` · `1080p` | `720p` |
| `ratio` | `adaptive` · `21:9` · `16:9` · `4:3` · `1:1` · `3:4` · `9:16` | `adaptive` |
| `generate_audio` | `true` · `false` | `false` |
| `watermark` | `true` · `false` | `false` |
| `seed` | An integer from -1 to 4294967295; -1 means random | `-1` |
| `return_last_frame` | `true` · `false` | `false` |

## Charges

Usage is recorded in meters such as `video_tokens`: funds for the upper bound are reserved at creation and the task is settled on actual usage, as [How billing works](./api-docs-en-billing.md) explains. List prices are on the [Pricing](./public-prices.html) page; your team's prices are in the console.

## Next steps

- [Generate a video](./api-docs-en-video-generate.md): Requests for text to video, first frames, first and last frames, reference images and reference media.
- [How billing works](./api-docs-en-billing.md): Funds for the upper bound are reserved at creation and settled on actual usage; failed and cancelled tasks are free.
- [Create a video task](./api-docs-en-api-video-tasks-create.md): Submit a prompt with optional images, videos or audio to create an asynchronous generation task; the task ID and the reserved amount come back at once.