Seedance 2.0

About

Seedance 2.0 is ByteDance’s frontier generation model and the first third-party partner model routed through the Sogni API: same key, same workflow endpoints, frontier-grade motion and prompt understanding up to 1080p with native audio.

It accepts a uniquely rich reference set — up to nine images, three videos, and three audio clips (twelve assets total, addressed as @Image1 / @Video1 / @Audio1 in the prompt). As a partner model it is Premium-Spark-only, runs on vendor infrastructure rather than Supernet workers, ignores negative prompts, and is priced by generated duration and resolution; supplying a video reference applies the lower v2v rate.

Workflows

Seedance 2.0 exposes these workflow variants — pass the matching model id.

Pricing

On the Sogni API you pay per clip in Spark (1 Spark = $0.005). Prefer a flat rate? The Sogni app runs Seedance 2.0 and 100+ other models credit-free under fair use.

Premium Spark required — purchased credits; no SOGNI fallback.

No negative prompts. Fixed 24 fps. Reference assets must be public HTTPS URLs.

Vendor capacity — does not consume Supernet GPU workers.

API

One Sogni API key reaches every model on the Supernet — call Seedance 2.0 by id.

import { SogniClient } from '@sogni-ai/sogni-client';

const client = await SogniClient.createInstance({
  appId: crypto.randomUUID(),
  apiKey: process.env.SOGNI_API_KEY,
  network: 'fast',
});

const project = await client.projects.create({
  type: 'video',
  modelId: 'seedance-2-0',
  positivePrompt: 'a slothicorn surfing a wave of liquid paint, slow push-in, cinematic',
  numberOfMedia: 1,
  duration: 5,
});

const [url] = await project.waitForCompletion();
console.log(url); // result link — download within 24h

curl https://api.sogni.ai/v1/creative-agent/workflows \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $SOGNI_API_KEY" \
  -d '{
    "input": {
      "title": "First render",
      "steps": [{
        "id": "step1",
        "toolName": "generate_video",
        "arguments": { "prompt": "a slothicorn surfing a wave of liquid paint, slow push-in, cinematic", "videoModel": "seedance2", "duration": 5 }
      }]
    },
    "confirm_cost": true
  }'

REST workflow alias: seedance2. Pin the exact id with the SDK. Full reference at docs.sogni.ai.