---
title: "Seedance 2 Omni Fast"
method: POST
path: "/v2/generation/seedance-2-omni-fast"
tags: ["Seedance 2"]
---

# Seedance 2 Omni Fast

`POST /v2/generation/seedance-2-omni-fast`

Video Generation using Seedance 2.0 Fast

## Query parameters

- `webhookUrl` string — Your Webhook URL, if specified, the result of the generation will be POSTed to this URL.
- `demoMode` 'failure' | 'success' — This parameter is used when the api key mode is 'development', default value is 'success'. when set to 'failure', the dummy generation will be 'failed' after a few seconds, if set to 'success', the dummy generation will be 'completed' after a few seconds.

## Request body

- object
  - `prompt` string, required
  - `duration` '4' | '5' | '6' | '7' | '8' | '9' | '10' | '11' | '12' | '13' | '14' | '15', required
  - `images` string[] — An array of image names or download URLs - if you don't have a download URL, you can upload the file and get the file name from the /upload endpoint.
  - `videos` string[] — An array of video names or download URLs - if you don't have a download URL, you can upload the file and get the file name from the /upload endpoint.
  - `audios` string[] — An array of audio file names or download URLs - if you don't have a download URL, you can upload the file and get the file name from the /upload endpoint.
  - `aspectRatio` '21:9' | '16:9' | '4:3' | '1:1' | '3:4' | '9:16', required
  - `quality` '480' | '720', required

## Response `200`

Response for status 200

- object
  - `genId` string, required

## Other responses

- `400` — Response for status 400
- `401` — Response for status 401
- `403` — Response for status 403
- `500` — Response for status 500

## Changes

- **2026-09-08** `2e066072b0aa` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/radinai/apis/api/changes/v2/generation/seedance-2-omni-fast/post.md)

---

[API](https://skmtc.dev/radinai/apis/api.md) · [All operations](https://skmtc.dev/radinai/apis/api/llms.txt) · [OpenAPI document](https://skmtc.dev/radinai/apis/api/revisions/4555b7f121b7?raw)