Seedance 2.5

seedance-2-5 is video generation from 4 to 15 seconds and 480p through 1080p. Its backend model schema is the source of truth for supported parameters.

Quick Facts

Item	Value
Model ID	`seedance-2-5`
Type	Video
Region	Global / CN
Best For	video generation from 4 to 15 seconds and 480p through 1080p

Recommended Request Shape

Call POST /v1/quote first and send exactly the same parameters when creating the task.

{
  "model": "seedance-2-5",
  "prompt": "A cinematic product reveal",
  "duration": 5,
  "resolution": "720p",
  "aspect_ratio": "16:9",
  "generate_audio": true
}

Field Reference

Field	Type	Required	Default	Description
`model`	`string`	Yes	-	Must be `seedance-2-5`
`prompt`	`string`	Yes	-	Video prompt
`reference_images`	`string[]`	No	-	Reference image URLs
`first_frame_image_url`	`string`	No	-	First-frame image URL
`last_frame_image_url`	`string`	No	-	Last-frame image URL
`duration`	`integer`	No	`5`	Output duration
`resolution`	`string`	No	`720p`	Output resolution
`aspect_ratio`	`string`	No	`16:9`	Frame ratio
`generate_audio`	`boolean`	No	`true`	Whether to generate audio

Supported Enums

Field	Values
`duration`	`4` through `15`
`resolution`	`480p` `720p` `1080p`
`aspect_ratio`	`21:9` `16:9` `4:3` `1:1` `3:4` `9:16`

Seedance 2.5 Integration Notes

has_video_input is server-derived and must not be supplied by clients.
Do not send fields absent from the model schema; use the live GET /v1/models response as authoritative.

Smallest Example

{
  "model": "seedance-2-5",
  "prompt": "A cinematic product reveal"
}