Seedance 2.5
30-second native AI video in a single pass — no stitching, no limits.
Seedance 2.5 is ByteDance's flagship next-generation AI video model and the most advanced text-to-video system available on Keyo Studio. Announced at the Volcano Engine FORCE conference in June 2026, it marks a generational leap over Seedance 2.0 — jumping straight past versions 2.1 through 2.4. Where earlier models topped out at short 5-to-15-second clips, Seedance 2.5 generates a full 30-second video in one native pass, complete with scene changes, tempo shifts, and consistent characters throughout. It is built for creators and studios who need production-ready video without the compromises of stitching short fragments together.
What is Seedance 2.5?
Seedance 2.5 is a proprietary text-to-video, image-to-video, and reference-to-video model developed by ByteDance. It sits at the very top of the Seedance family, above Seedance 2.0, 2.0 Fast, and 1.5 Pro. The model uses a unified audio-video generation architecture, where visual and sound signals are processed together in the same space rather than generated separately and synchronized afterward. This is what allows the model to hold a character's appearance, lighting, and motion style steady across the entire length of a clip — one of the hardest problems in AI video. The result is footage that feels directed rather than assembled, with the coherence you'd expect from real production.
30-second native generation
The headline capability of Seedance 2.5 is native 30-second video in a single generation. Most AI video tools — including Veo 3.1 and earlier Seedance versions — cap out around 8 to 15 seconds per clip, forcing creators to generate multiple fragments and stitch them together in an editor, often with visible seams and drifting characters. Seedance 2.5 removes that ceiling entirely. A full 30-second narrative, with its own setup, movement, and payoff, is produced in one pass. That's more than enough for a complete social ad, a product reveal, a story beat, or a music video segment — all without post-production stitching.
Up to 50 multimodal references
Seedance 2.5 accepts up to 50 multimodal reference inputs at once — images, video, audio, and text — giving you unprecedented control over the final result. You can supply character reference images to keep faces and outfits consistent, brand color palettes to lock visual identity, audio tracks to drive rhythm and lip sync, and storyboard frames to guide pacing. This makes the model especially powerful for complex scenes with multiple characters, multi-shot campaigns, and brand work where every detail has to stay on-model across the whole video.
Native 4K and region-level editing
Seedance 2.5 outputs in native 4K resolution, producing sharp textures, natural faces, smooth gradients, and cinematic depth suitable for large-screen playback, polished ads, and professional presentations. Alongside resolution, the model introduces region-level editing — the ability to change part of a frame without regenerating the entire clip. Instead of re-rolling a full 30-second video to fix one element, you can target a specific region and adjust it directly, saving both time and credits while keeping the rest of your shot untouched.
Coordinated audio and video
Because Seedance 2.5 generates movement, dialogue, music, ambient sound, and effects as one coordinated result, the audio and visuals are locked together from the start. You can direct rhythm, pacing, emotional tone, and lip sync directly in your prompt, producing video that feels polished and ready to edit rather than silent footage waiting for a soundtrack. A strong prompt describes the subject, scene, movement, camera language, style, audio, and intended final use.
Best use cases
Seedance 2.5 is built for professional production. It excels at short-form social ads, product reveals and e-commerce videos, brand campaigns with strict visual identity, music videos, short films and story beats, and any project where a complete 30-second narrative in one clip beats a patchwork of short fragments. For creators moving from experimentation into real client and commercial work, it's the model to reach for.
Pricing on Keyo Studio
Seedance 2.5 is priced per second of generated video, based on output resolution: 6 credits per second at 720p and 14 credits per second at 1080p. You only pay for the video you generate, with no subscription lock-in on individual models — credits work across every model and tool on Keyo Studio. A full 30-second clip at 720p costs 180 credits; at 1080p, 420 credits. This keeps professional-grade video generation accessible whether you're producing quick social content or high-resolution commercial work.
Frequently asked questions
What is Seedance 2.5?
Seedance 2.5 is ByteDance's flagship AI video generation model that creates native 30-second video clips in a single pass. It supports text-to-video, image-to-video, and reference-to-video generation with up to 50 multimodal reference inputs and 4K output.
How long can Seedance 2.5 videos be?
Seedance 2.5 generates up to 30 seconds of video in a single native pass — no stitching required. Most other AI video models cap out at 5 to 15 seconds per clip, making this one of the longest single-generation durations available.
How much does Seedance 2.5 cost on Keyo Studio?
Seedance 2.5 is priced per second of generated video: 6 credits per second at 720p and 14 credits per second at 1080p. A full 30-second clip costs 180 credits at 720p or 420 credits at 1080p.
What's the difference between Seedance 2.5 and Seedance 2.0?
Seedance 2.5 is a generational upgrade over 2.0, extending native video length from around 15 seconds to a full 30 seconds, adding support for up to 50 reference inputs, native 4K output, and region-level editing that lets you change part of a frame without regenerating the whole clip.
Can Seedance 2.5 generate video with audio?
Yes. Seedance 2.5 uses a unified audio-video architecture that generates movement, dialogue, music, and sound effects together as one coordinated result, with lip sync and pacing directed from your prompt.
What can I use Seedance 2.5 for?
Seedance 2.5 is built for professional production — short-form social ads, product reveals, brand campaigns, music videos, and short films where a complete 30-second narrative in one clip beats stitching short fragments together.