# Seedance 2.0 Fast

The speed-optimized variant of Seedance 2.0: Seedance 2.0 Fast delivers the same multimodal video capabilities at faster turnaround and lower cost than the standard variant.

- **Model ID:** `bytedance/seedance-2.0-fast`
- **Type:** video
- **Providers:** bytedance
- **Context window:** Not applicable
- **Maximum output tokens:** 0
- **Pricing:** See the provider details below
- **Canonical page:** https://vercel.com/ai-gateway/models/seedance-2.0-fast

## Supported parameters

- **Parameters:** `aspectRatio`, `resolution`, `duration`, `fps`
- **Operations:** `text-to-video`, `image-to-video`, `reference-to-video`
- **Input modalities:** `text`, `image`, `video`, `audio`
- **Output modalities:** `video`
- **Aspect ratios:** `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`
- **Resolutions:** `720p`
- **Durations:** `4s`, `5s`, `6s`, `7s`, `8s`, `9s`, `10s`, `11s`, `12s`, `13s`, `14s`, `15s`
- **Frame rates:** `24 fps`
- **Maximum outputs per request:** Not reported
- **Maximum input images:** 9
- **Input image formats:** `jpeg`, `png`, `webp`, `bmp`, `tiff`, `gif`
- **Maximum input image size:** 30 MB

## Example

```ts
import { experimental_generateVideo as generateVideo } from 'ai';

const result = await generateVideo({
  model: 'bytedance/seedance-2.0-fast',
  prompt: 'A serene mountain lake at sunrise.'
});
```

## About

Seedance 2.0 Fast is the speed-optimized companion to Seedance 2.0, released April 14, 2026 as part of the second-generation ByteDance Seedance video lineup. It preserves the full capability set of the standard variant (text-to-video, image-to-video, multimodal reference-to-video, and video editing and extension) but prioritizes generation speed and lower cost over peak output quality.

For iterative creative workflows, draft generation, and high-volume content pipelines, faster turnaround compounds into significant time savings. Teams iterating on prompts, exploring storyboards, or generating dozens of video variants for A/B testing benefit from the Fast tier's lower per-clip cost while retaining the same input flexibility.

Like the standard variant, Seedance 2.0 Fast supports synchronized multilingual audio, professional camera movements, multi-shot composition, in-video text rendering, and complex scenes with facial expressions and physical interactions.

AI Gateway applies no markup on video generation for Seedance 2.0 Fast: the rate matches the direct ByteDance provider price. Set the model to `bytedance/seedance-2.0-fast` and call it through the AI SDK's `generateVideo` function.

## What to consider

Seedance 2.0 Fast shares inputs and capabilities with Seedance 2.0 but accepts some quality tradeoff for speed. Use it for iteration, volume batch generation, and drafting where turnaround matters more than absolute fidelity.

## When to use

### Best For

- **Iteration and drafting:** Rapid prompt iteration and storyboard exploration where turnaround drives creative velocity
- **High-volume batch generation:** Content pipelines producing dozens of video variants for A/B testing or personalization
- **Cost-sensitive production:** Video workflows where per-clip price scales with traffic and the standard tier's cost isn't justified
- **Multimodal video at scale:** The full input set of Seedance 2.0 at lower cost for high-throughput generation
- **Preview generation:** Fast first-pass outputs that teams review before committing to Seedance 2.0 for final renders

### Consider Alternatives When

- **Peak output quality:** Seedance 2.0 targets the highest video fidelity when cost and speed aren't the binding constraint
- **Static image generation:** Use a dedicated image model when motion isn't required
- **Video understanding only:** Use a vision-language model to analyze existing video rather than generate new content

## Best for

- **Iteration and drafting:** Rapid prompt iteration and storyboard exploration where turnaround drives creative velocity
- **High-volume batch generation:** Content pipelines producing dozens of video variants for A/B testing or personalization
- **Cost-sensitive production:** Video workflows where per-clip price scales with traffic and the standard tier's cost isn't justified
- **Multimodal video at scale:** The full input set of Seedance 2.0 at lower cost for high-throughput generation
- **Preview generation:** Fast first-pass outputs that teams review before committing to Seedance 2.0 for final renders

## Consider alternatives

- **Peak output quality:** Seedance 2.0 targets the highest video fidelity when cost and speed aren't the binding constraint
- **Static image generation:** Use a dedicated image model when motion isn't required
- **Video understanding only:** Use a vision-language model to analyze existing video rather than generate new content

## Frequently asked questions

### How does Seedance 2.0 Fast differ from Seedance 2.0?

Both share the same input types, audio capabilities, camera controls, and in-video text rendering. The Fast variant trades some output quality for faster generation and lower cost. Choose based on whether peak fidelity or turnaround matters more.

### Does Seedance 2.0 Fast generate audio alongside video?

Yes. Audio generation is native and synchronized to the video, with multilingual support for dialogue, sound effects, and ambient audio.

### What input types does Seedance 2.0 Fast support?

Text-to-video, image-to-video, multimodal reference-to-video (combining image, video, and audio inputs), and video editing and extension. Same as the standard Seedance 2.0 variant.

### Can Seedance 2.0 Fast render text inside generated video?

Yes. In-video text rendering carries over from the standard Seedance 2.0 variant.

### Does Vercel AI Gateway support Zero Data Retention for Seedance 2.0 Fast?

Zero Data Retention is not currently available for this model. Zero Data Retention is offered on a per-provider basis. See https://vercel.com/docs/ai-gateway/capabilities/zdr for details.

### What is the pricing for Seedance 2.0 Fast?

Rates are listed on this page. AI Gateway applies no markup on video generation, so the rate matches the direct ByteDance provider price.

### How do I call Seedance 2.0 Fast through AI Gateway?

Set the model to `bytedance/seedance-2.0-fast` and call it through the AI SDK's `generateVideo` function. AI Gateway handles authentication, retries, and failover across `bytedance`.

## Links

- [Model page](https://vercel.com/ai-gateway/models/seedance-2.0-fast)
- [AI Gateway documentation](https://vercel.com/docs/ai-gateway)
- [Provider model documentation](https://console.byteplus.com/ark/region:ark+ap-southeast-1/model/detail?Id=dreamina-seedance-2-0-fast)


If you encounter incorrect information, can’t find what you need, need a capability Vercel doesn’t currently offer, or have any other feedback to report, please do it by following the instructions at https://vercel.com/feedback.md.