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Seedance 2.5 Flash
Seedance 2.5 Flash turns a prompt or a still frame into a clip up to 30 seconds long, with synced dialogue, sound effects and music at 480p or 720p. It renders twice as fast as the flagship for a third less cost, keeping batch ads affordable.
What Is Seedance 2.5 Flash?
Seedance 2.5 Flash is ByteDance's speed-optimised video model, offered here as a ready-to-run generator in the browser. Give it a prompt, a start frame or a reference set, and it returns a coherent shot of up to 30 seconds at 480p or 720p - motion, camera movement, dialogue, ambience and music produced together instead of stitched afterwards. A single request can carry up to ten reference images, five video clips and five audio tracks, so a character, a product and a soundtrack all survive into the same take. The Flash tier renders about twice as fast as the flagship Seedance 2.5 and costs roughly a third less at 720p, while instruction following, physical motion and audio fidelity stay close to the flagship and clearly ahead of Seedance 2.0. That balance is what makes the model practical for the work that fills a content calendar: variant-heavy ad testing, social cutdowns, pre-visualisation and storyboards. Nothing needs installing - open the generator, describe the shot, and iterate until the take is right.
- Video from Text or a Start FrameType a shot description or drop in a still frame, and Seedance 2.5 Flash builds the motion, the camera move and the sound in one pass - up to 30 seconds per clip, with no timeline and no keyframes.
- Multimodal Reference ControlEach request accepts up to ten images, five video clips and five audio tracks, so a face, a product finish and a music bed can be locked in before generation and hold across the take.
- Flash Speed, Flagship-Grade OutputIt renders about twice as fast as Seedance 2.5 and costs around a third less at 720p, while instruction following, physical motion and audio stay close to the flagship and ahead of Seedance 2.0.
How to Use Seedance 2.5 Flash
It works in three steps: describe the shot or upload a start frame, attach any reference images, clips or audio you want carried in, then generate and download. Everything runs in the browser, and a first take usually lands in well under a minute.
Why Creators Choose Seedance 2.5 Flash
A video model only earns a place in a real workflow when it survives deadlines. Seedance 2.5 Flash is built for that: about twice the render speed of the flagship and roughly a third lower cost at 720p, with the same instruction following, believable physical motion and coherent audio that made the Seedance line worth using. Write the shot, attach references, generate - and keep the takes that work.
Batch Ad Variants Without the Budget
Batch variant testing becomes realistic: one product shot, a dozen prompts and a set of 30-second spots covering different hooks, audiences and offers, at a cost per second a campaign can absorb.
Thirty-Second Takes with Real Audio
Dialogue, ambience, effects and music are generated with the picture rather than layered on later. It keeps sound and motion in step, which removes the usual sync pass from short-form production.
References That Hold the Shot Together
Ten images, five clips and five audio tracks can enter a single request, so a character's face, a product's finish and a music bed carry through the take instead of drifting between generations.
Prompt Accuracy You Can Plan Around
Compound instructions - who moves, where the camera goes, how light changes - are followed closely enough that a storyboard can be written once and generated as specified.
Fast Enough to Iterate in the Room
Because a take comes back in seconds rather than minutes, Seedance 2.5 Flash fits a live review: change a line, re-run the shot, compare versions while the client is still on the call.
Premium Plans & Pricing
Choose the perfect plan for your AI Video/Image Generator needs and start creating professional videos.
Basic-Yearly
$0.015/credit
Includes these features:
- 7200 credits per year
- High quality AI image Generator
- Powerful AI Video Generation
- AI video effect features
- Commercial License
- Fast generation queue
- Private generations
- Valid for 1 year
- Cancel anytime
/Year
Pro-Yearly
$0.013/credit
Includes these features:
- 25200 credits per month
- High quality AI image Generator
- Powerful AI Video Generation
- AI video effect features
- Commercial License
- Fast generation queue
- Private generations
- Valid for 1 year
- Cancel anytime
/Year
Max-Yearly
$0.01/credit
Includes these features:
- 54000 credits per year
- High quality AI image Generator
- Powerful AI Video Generation
- AI video effect features
- Commercial License
- Fast generation queue
- Private generations
- Valid for 1 year
- Cancel anytime
/Year
Seedance 2.5 Flash - Frequently Asked Questions
Answers on what Seedance 2.5 Flash is, how it differs from Seedance 2.5, clip length and resolution limits, how many references one request accepts, audio support, and how generation is priced.
What is Seedance 2.5 Flash?
It is ByteDance's fast-tier video model. It generates shots up to 30 seconds from a prompt, a still frame or a reference set, with motion, dialogue and music produced together, at 480p or 720p.
How is Seedance 2.5 Flash different from Seedance 2.5?
The Flash tier renders about twice as fast and costs roughly 34% less at 720p. Visual quality sits close to the flagship Seedance 2.5 and above Seedance 2.0; the flagship still wins when you need the highest finishing resolution.
How long can one Seedance 2.5 Flash clip be?
A single generation runs up to 30 seconds. Longer sequences are built by generating consecutive shots and cutting them together in your editor.
What resolutions can it output?
480p and 720p are available. For 1080p or 4K finishing, move an approved take to the flagship Seedance 2.5.
How many references can I attach per request?
Up to ten images, five video clips and five audio tracks per generation - enough to hold a character, a product and a soundtrack in the same take.
Does it generate audio?
Yes. Dialogue, sound effects, ambience and music are generated alongside the picture and stay synced to the motion, so no separate audio pass is needed.
How much does it cost?
Pricing follows generated duration. At 720p Seedance 2.5 Flash costs about $0.10 per second, so a 10-second clip lands near $1 - roughly a third less than the flagship model for the same length.
Write the Shot. Get the Video with Seedance 2.5 Flash
Bring a prompt, a still frame or a folder of references and let Seedance 2.5 Flash return a finished 30-second take - motion, dialogue and music already in sync, at 480p or 720p. It renders fast enough to iterate in one sitting and costs little enough to test a dozen directions before committing. Open the generator, describe what the camera should see, and start building clips that are ready to cut.