Seedance 2.5 API

Create Seedance 2.5 AI videos through seedance-25-ai.com.

The primary product surface is the tenant AI video studio. It opens with the Seedance 2 model selected by default and supports text-to-video and image-to-video creation from an authenticated account.

Open AI video studio See pricing

Authentication

Keep the signed-in session cookie and send the user's API key in the Authorization header. The server adds the internal service key before calling the generation service.

Authorization: Bearer <api_key>
Content-Type: application/json

Costs

Video costs depend on model, duration, resolution and audio options.
Credits are checked before generation and deducted by the video task service.
Pay-as-you-go credits never expire; see the pricing page for plans.

Text to Video

Start with a prompt and describe the subject, scene, camera motion, lighting and style.

{
  "prompt": "A cinematic product reveal with a slow dolly-in camera move",
  "model": "seedance-2.0",
  "duration": 5,
  "resolution": "720p",
  "aspect_ratio": "16:9"
}

Image to Video

Upload a reference image from the composer to keep the first frame, product or character more consistent.

{
  "image_url": "https://example.com/reference.jpg",
  "prompt": "Animate the scene with gentle wind and a soft camera push",
  "model": "seedance-2.0"
}

History

Generated clips appear in the tenant video history feed for reuse, download and prompt iteration.

Limits

Prompt length: 1-2500 characters.
Supported ratios include 16:9, 9:16, 4:3 and 3:4 for the default Seedance 2 model.
Available duration and resolution options are shown in the studio model settings.
Use only images, people, trademarks and media you have the right to provide.