Seedance 2.0 Fast

Faster video generation for short-form clips, prompt iteration, keyframes, and multimodal image references.

Warm Official Pre-release Priced by route Data privacy Zero training API docs

Input

prompt*string

Describe the subject, motion, camera, lighting, and timing

route_modestring

Choose the provider route used for this request.

Lower-cost official route and the default for new requests and API keys.

generation_typestring

Select the generation workflow. The API mode updates with this choice.

aspect_ratiostring

Aspect ratio of the generated output

Default: "16:9"

resolutionstring

Higher resolutions may take longer to generate.

Default: "720p"

durationnumber

Length of the generated video in seconds

generate_audioboolean

Generate synchronized audio with the video.

true

Output

Ready for a predictionAdjust the inputs, then run the model.

Examples

View more examples ↗

Pricing

Video is billed on the output tokens each task returns. The estimate changes with resolution, duration, route, and video references.

Learn more about pricing ↗

All video rates

Per million output tokens, with an estimate per second of video. Requests that include a reference video (video_urls) are billed at the video reference rate.

Resolution	officialNo reference	officialVideo reference	official-cheapNo reference	official-cheapVideo reference
480p	$5.6 / 1M tokens≈ $0.073 / s	$3.3 / 1M tokens≈ $0.043 / s	$5.152 / 1M tokens≈ $0.067 / s	$3.036 / 1M tokens≈ $0.039 / s
720p	$5.6 / 1M tokens≈ $0.151 / s	$3.3 / 1M tokens≈ $0.089 / s	$5.152 / 1M tokens≈ $0.139 / s	$3.036 / 1M tokens≈ $0.082 / s

Readme

Seedance 2.0 Fast is available through MLMux with one request shape and two explicit route tiers.

Fast creative iteration

Move from prompt to short video quickly for storyboards, social concepts, commerce assets, and campaign variations.

Reference control

Use one image, first and last keyframes, or several image references while keeping the same asynchronous MLMux task contract.

Production delivery

Generated videos are mirrored to MLMux storage and returned through the same task polling endpoint used by every video model.

Frequently asked questions

What is Seedance 2.0 Fast?

Seedance 2.0 Fast is a video generation model from ByteDance. On MLMux you can run it in the browser or call it through one API. Faster video generation for short-form clips, prompt iteration, keyframes, and multimodal image references.

How do I use the Seedance 2.0 Fast API?

Create an API key in the MLMux Console, then send a POST request to https://api.mlmux.com/v1/videos/generations with the key in the Authorization header and model set to bytedance/seedance-2.0-fast. The request returns a task: poll it, or receive a webhook when the video is ready.

What can Seedance 2.0 Fast do?

Generation modes: Text to video, Image to video, First & last frame, and Multimodal reference. Clips run 4 to 15 seconds at 480p or 720p, in aspect ratios such as 16:9, 21:9, 4:3, 1:1, 3:4, and 9:16, with up to 9 reference images. Seedance 2.0 Fast can also generate audio together with the video.

How much does Seedance 2.0 Fast cost?

MLMux is pay as you go, with no subscription or monthly fee, and 1 credit equals 1 US dollar. One second of 720p Seedance 2.0 Fast video without a reference video costs about $0.139 on the default official-cheap route and $0.151 on the official route, billed on the output tokens each task actually uses. Rates for every resolution are listed in the pricing section of this page.

Can I try Seedance 2.0 Fast without writing code?

Yes. Sign in and use the playground at the top of this page to run Seedance 2.0 Fast with the same settings as the API. The API tab shows the matching request in Node.js, Python, and HTTP.