Seedance 2.5 is ByteDance's flagship multimodal AI video generation model, built to turn a single prompt — plus optional reference images, videos and audio — into cinematic video with synchronized native audio. It succeeds Seedance 2.0 with stronger motion realism, better prompt adherence and a fully multimodal input pipeline.
At its core, Seedance 2.5 understands more than text. You can attach a first frame to lock the opening shot, a last frame to control exactly how the video ends, and combine reference images, reference videos and reference audio clips in a single request. The model keeps characters, clothing, products and scene styles consistent across the whole clip.
Output options cover 480p, 720p and 1080p resolution with clip lengths from 4 to 15 seconds. A native audio switch generates synchronized dialogue, ambience and sound effects together with the visuals — or you can turn audio off for silent footage when you plan to add your own soundtrack in post.
For creators, the biggest day-to-day difference is control. Instead of hoping the model interprets your prompt correctly, you feed it actual materials: a product photo, a shot of your actor, a voice sample. Seedance 2.5 then animates the scene around those anchors, which makes it especially strong for advertising, short drama and product demonstration videos.
You can try Seedance 2.5 directly in the browser with no installation: open the Seedance 2.5 generator, write a prompt, attach your materials and generate.