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# Seedance 2.0 Fast

> Speed-optimized 2.0 video variant for cinematic clips with native audio sync, camera control, and stable motion at lower cost per render.

![Seedance 2.0 Fast](https://media.empiriolabs.ai/model-logos/seedance-2-0-fast.png)

[ByteDance](/providers/bytedance) · Video Generation

`POST /v1/videos/generations`

Speed-optimized 2.0 video variant for cinematic clips with native audio sync, camera control, and stable motion at lower cost per render.

## At a glance

| Field               | Value                                              |
| ------------------- | -------------------------------------------------- |
| Model id            | `seedance-2-0-fast`                                |
| Model release date  | 2026-02-12                                         |
| Input modalities    | Text, Image, Video, Audio                          |
| Output modalities   | Video                                              |
| Context window      | -                                                  |
| Weight precision    | -                                                  |
| Region              | Malaysia                                           |
| Features            | audio_sync, camera_control                         |
| Native inference    | No                                                 |
| New                 | No                                                 |
| Supported endpoints | `POST /v1/videos/generations`                      |
| Alternate model ids | `bytedance/seedance-2.0-fast`, `seedance-2.0-fast` |

## Pricing

| Charge           | Spec       | Rate    |
| ---------------- | ---------- | ------- |
| T2V/I2V 480P     | per second | \$0.122 |
| T2V/I2V 720P     | per second | \$0.260 |
| Video Input 480P | per second | \$0.284 |
| Video Input 720P | per second | \$0.610 |

## Example request

```bash
curl https://api.empiriolabs.ai/v1/videos/generations \
  -H 'Authorization: Bearer $EMPIRIOLABS_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"model": "seedance-2-0-fast", "prompt": "sunrise over the ocean", "duration": 6}'
```

## Parameters

| Parameter         | Type    | Required | Default      | Description                                                                                                                                                                                                                                                                                                                   |
| ----------------- | ------- | -------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `prompt`          | string  | yes      | -            | Scene description.                                                                                                                                                                                                                                                                                                            |
| `mode`            | enum    | no       | `"auto"`     | auto: detect from inputs. t2v: text-to-video. i2v_first: animate first frame. i2v_both: morph between start (image) and end (image_end). reference: use image as visual reference. edit: edit attached video. extend: extend attached video. · Allowed: `auto`, `t2v`, `i2v_first`, `i2v_both`, `reference`, `edit`, `extend` |
| `resolution`      | enum    | no       | `"720p"`     | Output resolution. · Allowed: `480p`, `720p`                                                                                                                                                                                                                                                                                  |
| `aspect_ratio`    | enum    | no       | `"adaptive"` | Output aspect ratio. adaptive lets the model choose from your inputs. · Allowed: `adaptive`, `16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`                                                                                                                                                                                      |
| `custom_duration` | boolean | no       | true         | If false, the model decides clip length. If true, use the duration field.                                                                                                                                                                                                                                                     |
| `duration`        | number  | no       | `5`          | Clip length in seconds. Only used when custom_duration=true. · Range: 4 – 15                                                                                                                                                                                                                                                  |
| `generate_audio`  | boolean | no       | true         | Generate native audio with the video.                                                                                                                                                                                                                                                                                         |
| `image`           | string  | no       | -            | Reference image URL.                                                                                                                                                                                                                                                                                                          |
| `image_end`       | string  | no       | -            | End-frame image URL for i2v_both.                                                                                                                                                                                                                                                                                             |
| `video`           | string  | no       | -            | Reference video URL for edit / extend.                                                                                                                                                                                                                                                                                        |
| `negative_prompt` | string  | no       | `""`         | What to avoid.                                                                                                                                                                                                                                                                                                                |

## Notes

Speed-optimized variant of Seedance 2.0 Pro: faster, lower-cost, ideal for rapid iteration. 480p and 720p only (no 1080p).

**Tip**

* Pair with Seedream 5.0 Lite for the reference image first when targeting lifelike-face cohesion across multiple inputs.

**Uploaded media preprocessing**

* Video inputs are capped to 15 seconds for reference, edit, and extend workflows.
* Uploaded video inputs are normalized to provider-compatible MP4 when needed.

---

*Machine-readable schema:* `GET https://api.empiriolabs.ai/v1/models/seedance-2-0-fast`.