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.'});