seedance 2.5
Long AI video with references30 second renders with native audio
Highlights
What you can do with it
- Produce a single continuous 30 second scene
- Keep a character or product consistent across a clip
- Generate multilingual audio without a dubbing pass
How to use it
- 1 Sign up and use the free trial quota
- 2 Upload reference images, clips or audio to lock the look
- 3 Write the prompt for the scene and camera movement
- 4 Generate and check continuity, references and audio
- 5 Move to a paid plan for higher monthly limits
Who it is for
Pros
- Long single renders reduce editing continuity work
- Reference inputs help keep subjects consistent
- Audio is generated with the video in 10 languages
Limitations
- The free quota is a trial, not an ongoing allowance
- Long renders are unlikely to be cheap in credit terms
- Paid tiers are needed for regular or high volume use
- Reference consistency is not guaranteed and may need retries
What seedance 2.5 is
seedance 2.5 is a video generation model from ByteDance, shown at the FORCE conference in June 2026. The main claim is length: it can render up to 30 seconds of continuous video in one pass, which sidesteps the continuity problems you get when you stitch several short clips together. It also takes up to 50 multimodal reference files, meaning images, video clips and audio, and uses them to lock in character appearance, product look, motion style and tone. Audio is generated natively in 10 languages at the same time as the picture, so there is no separate dubbing or sync step. New accounts start with a free trial quota, and paid plans add credits and higher monthly generation limits depending on the package.
What you can do with it
- Render a single continuous scene of up to 30 seconds
- Lock characters, products and motion using reference files
- Generate native audio in 10 languages alongside the video
- Build longer sequences without manual clip stitching
Who it is for
- Creators who need longer single takes rather than short loops
- Brands keeping a product consistent across a campaign
- Teams producing multilingual versions of the same footage
What to watch out for
A free trial quota is a test, not a subscription. Paid plans are required for regular work, and long 30 second renders are unlikely to be cheap in credit terms, so check the cost per generation before you commit to a project. Reference files help consistency but do not guarantee it; expect retries when a character drifts or a product shape changes between shots. Audio in 10 languages covers the listed set, and quality outside those languages is not promised. As with most new models, behaviour and limits can change between releases, so save your prompts and settings somewhere you control.
FAQ
Is there a free option?
New accounts get a free trial quota, and paid plans offer more credits and higher monthly limits.
How long can one video be?
Up to 30 seconds of continuous video in a single render.
How many references can I use?
Up to 50 multimodal files, including images, video clips and audio.
What about audio?
Native audio is generated with the video in 10 languages.
Why it is free
What the official page says： 免费额度免费试用免费
Free limits, trial length and features are decided by the official site and can change at any time.
Product preview
Screenshot archived from the listing page, for preview only.