Comparison · Video models
Seedance 2.5 vs Seedance 2.5 Flash
Seedance 2.5 or 2.5 Flash? Flash is faster and cheaper at 720p, the full model adds 1080p, 30 references and video editing. Differences and prices.
Specs side by side
| Seedance 2.5 | Seedance 2.5 Flash | |
|---|---|---|
| Vendor | ByteDance | ByteDance |
| Type | Video | Video |
| Modes | text-to-video image-to-video first-last-frame reference-to-video video-edit | text-to-video image-to-video first-last-frame reference-to-video |
| Released | 2026-07 | 2026-11 |
| Duration | 4-30 s or auto (-1) | 4-30 s |
| Resolutions | 480p, 720p, 1080p | 480p, 720p |
| Aspect ratios | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, adaptive | 16:9, 9:16, 4:3, 3:4, 1:1, 21:9 |
| Reference images | up to 30 | up to 10 |
| Reference videos | up to 10 | up to 5 |
| Frames | first and last frame | first and last frame |
| Audio | native audio, on/off switch | native audio, on/off switch |
| Prompt length | up to 20,000 chars | up to 20,000 chars |
Price per unit and per clip
| Model | Variant | Rate | 5 s clip | 10 s clip |
|---|---|---|---|---|
| Seedance 2.5 | 480p | $0.261 / s | $1.30 | $2.61 |
| 720p | $0.587 / s | $2.94 | $5.87 | |
| 1080p | $1.41 / s | $7.07 | $14.14 | |
| Seedance 2.5 Flash | 480p | $0.264 / s | $1.32 | $2.64 |
| 720p | $0.528 / s | $2.64 | $5.28 |
Prices exclude taxes and are charged from your prepaid USD balance. Failed generations cost nothing.
Seedance 2.5 Flash is a faster, trimmed-down Seedance 2.5. Both make a single 4 to 30 second shot with audio from text, an image or references. Use Flash for quick versions, reels and ads at 720p. Keep the full model for 1080p finals, projects with many references and edits of existing video.
Key differences
- Resolution. Seedance 2.5 Flash does 480p and 720p. Seedance 2.5 also does 1080p.
- Speed. ByteDance says Flash generates roughly twice as fast with results close to the full model.
- References. Flash: up to 10 images, 5 clips and 5 audio tracks. Full model: 30 images, 10 clips and 10 tracks.
- Editing. Only the full Seedance 2.5 edits and extends existing video.
- Aspect ratios. Both have 16:9, 9:16, 4:3, 3:4, 1:1 and 21:9. The full model also has an adaptive mode.
- Price. At 720p Flash is about 10% cheaper per second, at 480p the rates are practically equal. In both, reference videos add their own seconds.
When to pick Seedance 2.5 Flash
- You're exploring a shot and want several versions fast.
- A 9:16 reel or an ad where 720p is enough.
- Animating a product photo or moving between two frames.
When to pick Seedance 2.5
- A 1080p final.
- A project with a dozen photos of the same person or product.
- Editing or extending an existing clip.
Rates at the lowest resolution: from $0.264 per second (Flash) and from $0.261 per second (full model). Everything else is on the pricing page.
FAQ
Is Flash worse than the full Seedance 2.5?
ByteDance says results are close to the full model. The differences are resolution (no 1080p), fewer references and no video editing.
Which one is cheaper?
Flash at 720p, by about 10% per second. At 480p they cost practically the same. Failed generations are free in both.
Do both generate sound?
Yes, both generate speech, effects and music together with the picture.
Vendor examples
Seedance 2.5
Seedance 2.5 Flash
Official examples from the model vendors, not our generations.