Seedance 2.5

Seedance 2.5 is ByteDance Seed's current audio-video joint generation model. The official page says it is built for 30-second storytelling with precise reference control and stronger editing. You can generate up to 30 seconds in one take and extend twice for a longer story. Seedance 2.0 remains the in-app teaser inside Doubao. 2.5 is the research-site lead: smoother motion, more realistic visuals, and tools aimed at professional production.

Key Features

• 30 seconds, extend twice: One generation up to 30s, then two extensions for a longer narrative.
• Joint audio-video: Continues the Seedance line of audio-visual generation rather than silent clips only.
• Smarter references: Official copy says it reads intention, framing, and cinematic language from reference video, not only motion transfer.
• Pro editing: White-model control, green-screen editing, camera movement, and performance blocking are listed for complex production.
• Try / API / compare: The page offers Try Now, Compare Now, and Get API (on the 2.0 sibling page; confirm the live 2.5 CTA).

Use Cases

• Short-form story shots that need sound and a second extension instead of a 4-15s clip.
• Reference-driven brand film when a previous take should teach framing, not only pixels.
• Green-screen and white-model control for production teams that already composite.

Pricing

The Seedance 2.5 page we fetched does not publish a public per-second table. Consumer Doubao currently advertises Seedance 2.0 as free after login. API access is a separate Volcengine / Seed path. Check the live Try/API buttons and Doubao's in-app meter.

Getting Started

1. Read seed.bytedance.com/en/seedance2_5.
2. If you only need a consumer trial, log into Doubao and see whether the picker still says 2.0 or already 2.5.
3. For API work, follow the page's Get API / Volcengine path and confirm the model ID.
4. Start with a 30-second take before you spend both extensions.

Frequently Asked Questions

Is this Seedance 2.0?

No. 2.0 is the Doubao homepage promo. 2.5 is the Seed site's next-generation 30-second model. Nav also lists 2.5 as current.

Open weights?

The public 2.5 page does not promise downloadable weights. Do not assume a local checkpoint.

Versus Veo or H3?

Veo 3 is Google's cinematic family (now 3.1, 1080p/4K). MiniMax H3 publishes $0.08-$0.13/s API rates for 768P/2K up to 15s. Seedance 2.5's published hook is 30 seconds plus two extends.

Alternatives

• Doubao: Consumer app currently bundling Seedance 2.0.
• Veo 3: Google DeepMind cinematic video.
• MiniMax H3: Pay-as-you-go 2K stereo, shorter clips.

Tips

1. Keep 2.0 vs 2.5 straight in internal docs. Doubao and Seed are not always on the same number.
2. Use extensions only after the first 30s works. Official story is generate, then extend twice.
3. Confirm the Seed nav. 2.5 can be replaced the same way 2.0 was.