KymaKyma
ByteDance

ByteDance

Seedance 2 Fast

Seedance 2 Fast is a video generation model optimized for speed and cost efficiency. Reach for it when you need to produce short social clips, UI motion prototypes, or product demos quickly without sacrificing baseline quality.

Modalities

Text → Audio

Price

$0.326565 / sec

Context

0K

Usage

How much this model is actually called here.

Rank

#62

of 117 active models

Tokens served

138.7K

all-time

Platform share

0.0%

of all tokens

Pricing

Per second of generated video. Failed jobs are refunded in full.

$0.326565 / sec

When to use Seedance 2 Fast

Updated 2026-07-31

Where this model earns its cost — and where it doesn't.

Developed by ByteDance, this model generates video and native audio from text or image prompts. It operates as the fast tier of the Seedance 2 family, delivering quicker generation times at a lower cost than the Pro variant.

On Kyma, the endpoint is OpenAI-compatible and routes through automatic failover if a serving path degrades. You can enable prompt caching to bill repeated prefixes at this model's cached input rate, and every response returns exact billing in usage.cost alongside the X-Kyma-Model header.

It does not support vision input analysis, structured outputs, or reasoning chains. The model is billed per second of generated output and is optimized for shorter clips rather than long-form video.

Social Media Shorts

Generate quick, engaging video clips with bundled audio for platforms like TikTok or Reels.

UI Motion Prototyping

Create animated mockups and interface transitions from static design assets.

Rapid Product Demos

Iterate on short promotional videos or feature walkthroughs with fast turnaround times.

Not ideal for: Do not use this model for long-form cinematic video, complex multi-step reasoning tasks, or workflows requiring structured JSON outputs.

Quick start

Up and running in under two minutes.

  1. 1

    Create an API key

    Sign up and grab a key from the dashboard. Seedance 2 Fast needs a top-up — the signup credit covers the free tier.

    Get API key →
  2. 2

    Make your first request

    Submit a generation job and poll until it succeeds.

    curl https://kymaapi.com/v1/videos/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2-fast",
    "prompt": "A wave breaking on a rocky shore at golden hour, cinematic",
    "duration": 5
  }'
# Poll: GET /v1/jobs/{id} until status="succeeded"

FAQ

Common questions about this model.

How much does Seedance 2 Fast cost?

$0.326565 per sec. Per second of generated video. Failed jobs are refunded in full.

How do I use Seedance 2 Fast?

Kyma is OpenAI-compatible: point your SDK's base URL at https://kymaapi.com/v1, use your Kyma API key, and set the model to seedance-2-fast. Signing up is free, but this model needs a top-up: the $0.50 signup credit covers the free tier only.

Does this model support image-to-video generation?

Yes, it accepts both text and image inputs to produce video and native audio outputs.

How does prompt caching work for video generation?

Repeated prompt prefixes are billed at this model's cached input rate, reducing costs for iterative workflows.

What happens if a generation request fails?

Kyma automatically reroutes degraded requests through alternate serving paths, so a single bad path does not surface as a failed generation.

Needs a top-up — the signup credit covers the free tier.Create account →

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