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Seedance v1.5 Pro

Seedance v1.5 Pro is ByteDance's first audio-visual joint generation video model, released December 16, 2025. It produces synchronized dialogue, sound effects, and ambient audio alongside 1080p video in one generation pass, with multilingual voice and regional dialect support.

Video Gen
index.ts
import { experimental_generateVideo as generateVideo } from 'ai';


const result = await generateVideo({
  model: 'bytedance/seedance-v1.5-pro',
  prompt: 'A serene mountain lake at sunrise.'
});
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Playground

Try out Seedance v1.5 Pro by ByteDance. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.