Question 1

What is ByteDance Seedance 2.5?

Accepted Answer

Seedance 2.5 is the next-generation AI video model developed by ByteDance. Designed to generate continuous 4K cinematic videos up to 30 seconds with native audio, advanced multimodal reference control, and AI sound sync.

Question 2

What is the difference between Seedance 2.5 and Seedance 2.0 / Mini?

Accepted Answer

Seedance 2.5 expands native duration up to 30 seconds, supports 4K resolution, significantly improves physical motion fidelity, adds smooth Frame-to-Frame transitions, and enables full multimodal reference processing.

Question 3

How does Multimodal Reference Control work?

Accepted Answer

You can upload up to 30 reference images for character & style consistency, 1 motion video to guide camera/character movement, and 1 audio file for native lip-sync and rhythm.

Question 4

How does billing and credit calculation work?

Accepted Answer

Official Seedance 2.5 billing is based on duration and resolution, with progressive discounts up to 25% for 30-second generations. All prices are cleanly rounded to multiples of 5.

Question 5

Does Seedance 2.5 generate Synchronized Native Audio?

Accepted Answer

Yes! When Synchronized Native Audio is enabled, the engine automatically generates sound effects (SFX), ambient sound, and voice perfectly aligned with visual events.

Question 6

How to optimize prompts with DX AI?

Accepted Answer

Click the Optimize with DX AI button. Our DX AI model analyzes your idea and automatically injects camera framing, lighting, physics, and multimodal references (@Image1, @Image2).

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