Seedance 2.5 generates at 480p and 720p today (ByteDance's announced 4K tier hasn't shipped through the API yet — Seedance 2.0 remains the pick for 1080p/4K). What 2.5 trades in resolution it returns in coherence, reference control, and single-pass length.
Generate up to a full 30-second clip in one shot — no stitching or seams, well beyond what earlier Seedance versions produced in one pass. Longer narrative beats without chaining clips together.
Feed Seedance 2.5 up to 30 reference images, 10 reference videos, and 10 reference audios simultaneously — 50 in total. Audio can even be the only reference. The model honors them together to steer style, motion, and composition.
Every clip can come back with a synchronized audio track generated in the same pass — dialogue-ready ambience and effects without a separate sound step, at no added charge.
ByteDance reports roughly 20% improved prompt accuracy over the prior generation — the model follows instructions more precisely, so you reach a usable take in fewer attempts.
Seedance 2.5 is available on Sunra today on a subscription, alongside Seedance 2.0 and Seedance 2.0 Fast. Pick 2.5 in the video generator and start prompting.
Open Sunra Video and select Seedance 2.5 — included in every Sunra subscription alongside the rest of the Seedance family.
Type a prompt with the motion, mood, and subject you want, upload a still for image-to-video, or attach reference media — up to 30 images, 10 videos, and 10 audios in one task. Audio-only reference works too.
Pick 480p or 720p, set 4–30 seconds, and generate. Chain clips in Sunra Flow for longer sequences, or let 2.5's single-pass 30-second output cover the whole beat in one take.
When you attach reference videos, Seedance 2.5 follows the input video's aspect ratio (adaptive) — that's an upstream rule, not a Sunra limit. Image-only and audio-only references keep whatever ratio you pick.
Full demo
The complete Seedance 2.5 demo — generated from a single prompt with up to 50 reference inputs.
Join thousands of creators, agencies, and brands who use Sunra every day.
