# Seedance 2.0 Fast

Seedance 2.0 Fast is ByteDance's accelerated version of Seedance 2.0, built for faster, lower-latency video generation. In Sloosh it takes the same references and sound setting as Seedance 2.0. In Sloosh it makes 480p or 720p clips of any whole length from 4 to 15 seconds, which suits drafts and social clips.

Web page: https://sloosh.ai/models/seedance-2.0-fast

[Use Seedance 2.0 Fast](https://sloosh.ai/studio/video?video-model=seedance-2.0-fast)

[View templates](https://sloosh.ai/models/seedance-2.0-fast/templates.md)

## Key facts in Sloosh

|   |   |
| --- | --- |
| Made by | ByteDance (ByteDance Seed) |
| Makes | video (with sound: optional, on by default) |
| Inputs | text; start frame (optional); end frame (optional); up to 9 reference images; up to 3 reference videos (each 2 to 15 seconds, 15 seconds in total); up to 3 reference audio clips (wav or mp3, 2 to 15 seconds each, 15 seconds in total, up to 15 MB, only with another reference). Frames and reference images can't be used in the same run. |
| Length | any whole number of seconds from 4 to 15 |
| Resolution | 480p, 720p |
| Aspect ratios | Auto, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 |
| Prompt limit | 30,000 characters |

## Best for

- Drafts: ByteDance calls it "an accelerated variant of Seedance 2.0 designed to boost generation speed for low-latency scenarios" ([ByteDance Seed technical report](https://seed.bytedance.com/en/public_papers/seedance-2-0-advancing-video-generation-for-world-complexity)). Settle the prompt here, then make the final on Seedance 2.0 or 2.5 ([Sloosh docs](https://sloosh.ai/docs/seedance-2-0-fast.md)).
- Social clips where 720p is enough ([Sloosh docs](https://sloosh.ai/docs/seedance-2-0-fast.md)).
- Reference-guided product clips at any length from 4 to 15 seconds, with the same reference limits as Seedance 2.0 (catalog).

## How to use Seedance 2.0 Fast in Sloosh

1. Open [Video](https://sloosh.ai/studio/video?video-model=seedance-2.0-fast) and pick Seedance 2.0 Fast in the model chip.
2. Add references or a start and end frame (not both).
3. Write numbered shots, references first.
4. Pick 480p or 720p, a length from 4 to 15 seconds and an aspect ratio; leave sound on or switch it off.
5. Check the price on the Generate button, then generate.

## Seedance 2.0 Fast prompting tips

- Prompt it exactly like Seedance 2.0: references first, then `Shot 1`, `Shot 2`, `Shot 3` ([Sloosh docs](https://sloosh.ai/docs/seedance-2-0-fast.md)).
- Sound effects in angle brackets, music in brackets, dialogue in curly brackets ([Sloosh docs](https://sloosh.ai/docs/seedance-2-0-fast.md)).
- End with "No subtitles, no logo, no watermark." ([Sloosh docs](https://sloosh.ai/docs/seedance-2-0-fast.md)).

## Seedance 2.0 Fast example prompts

**Prompt 1**

```text
Refer to the headphones in Image 1. Shot 1: The headphones rest on a desk by a window at golden hour. Shot 2: A hand lifts them; slow push-in on the ear cushion. <soft fabric rustle> Shot 3: Wide shot of the desk as the light fades. (lo-fi beat) No subtitles, no logo, no watermark.
```

**Prompt 2**

```text
Refer to the dog in Image 1. Shot 1: The dog runs across a sunny park toward the camera. Shot 2: Low tracking shot beside it through the grass. Shot 3: It stops and tilts its head. <a happy bark> No subtitles.
```

**Prompt 3**

```text
Refer to the lipstick in Image 1; keep its red colour and gold case. Shot 1: The cap pops off on a pink marble surface. <a click> Shot 2: Macro shot as the bullet twists up. Shot 3: Slow orbit around the lipstick. No subtitles, no logo, no watermark.
```

## How it compares in Sloosh

|   | Seedance 2.0 Fast | Seedance 2.0 | Seedance 2.5 |
| --- | --- | --- | --- |
| Length | 4 to 15 s, any whole second | 4, 6, 8, 10, 12, 15 s | 4 to 30 s |
| Max resolution | 720p | 4K | 1080p |
| References (images / videos / audio) | 9 / 3 / 3 | 9 / 3 / 3 | 30 / 10 / 10 |
| Sound | optional | optional | optional |

## Where else it runs

Skipped: no maker page listing Seedance 2.0 Fast availability was checked.

## Frequently asked questions

### Seedance 2.0 vs Seedance 2.0 Fast: what's the difference?

ByteDance describes Fast as the accelerated variant of 2.0. In Sloosh, Fast stops at 720p and allows any length from 4 to 15 seconds; 2.0 reaches 4K at fixed lengths.

### Is Seedance 2.0 Fast good for drafts?

Yes. It prompts exactly like Seedance 2.0, so you can settle the prompt on Fast and make the final on 2.0 or 2.5.

### Can Seedance 2.0 Fast make 1080p video?

No. It offers 480p and 720p. For 1080p use Seedance 2.0 or 2.5; for 4K use Seedance 2.0.

### Can I turn off sound?

Yes, with the speaker switch. The price on the Generate button can change.

### Is Seedance 2.0 Fast free?

Not for free: Sloosh has no free plan, so each Seedance 2.0 Fast clip is paid from your plan. Any current offer shows on [pricing](https://sloosh.ai/pricing), and Studio shows the exact price before you generate. Your first Sloosh workspace gets 20 starter credits once, so you can try it before you pay.

## Related

- Models: [Seedance 2.0](https://sloosh.ai/models/seedance-2.0), [Seedance 2.5](https://sloosh.ai/models/seedance-2.5), [MiniMax H3 Max](https://sloosh.ai/models/minimax-h3-max), [Wan 3 Prime](https://sloosh.ai/models/wan-3.0-prime)
- Docs: [Seedance 2.0 Fast](https://sloosh.ai/docs/seedance-2-0-fast.md)

## Sources

- [ByteDance Seed: Seedance 2.0 technical report](https://seed.bytedance.com/en/public_papers/seedance-2-0-advancing-video-generation-for-world-complexity)
- [Sloosh docs: Seedance 2.0 Fast](https://sloosh.ai/docs/seedance-2-0-fast)