ByteDance's Seedance and Google's Veo 3.1 are two of the most-searched AI video models, and they take very different approaches. Veo 3.1 is built for short, polished clips of 4–8 seconds, up to 4K. Seedance goes longer and more controllable: up to 15 seconds with Seedance 2.0 and up to 30 seconds with Seedance 2.5, with many reference images, videos and audio clips.
This guide compares them on what you choose a model for. All specs and prices are what you get on SeeVid, where Seedance and Veo 3.1 run side by side with one credit balance.
The Short Answer
- Pick Veo 3.1 for short hero shots and native 4K, or Veo 3.1 Lite for the cheapest 8-second tests.
- Pick Seedance 2.0 for clips up to 15 seconds with references, at a higher price than Veo 3.1 Fast but with more control — and 4K too.
- Pick Seedance 2.5 for 30-second takes, many references, video editing and extending.
Side-by-Side Comparison
| Seedance 2.0 | Seedance 2.5 | Veo 3.1 (Fast) | Veo 3.1 Lite | |
|---|---|---|---|---|
| Maker | ByteDance | ByteDance | ||
| Clip length | 4–15 s | 4–30 s, or Auto | 4, 6 or 8 s | 4, 6 or 8 s |
| Resolution | 480p – 4K | 480p – 1080p | 720p, 1080p, 4K | 720p, 1080p |
| Sound | Included | Included | Optional (costs more) | Optional (costs more) |
| Aspect ratios | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 | 16:9, 9:16 | 16:9, 9:16 |
| Image-to-video | Yes | First + last frame | Up to 3 images | First + last frame |
| Reference images / videos / audio | 9 / 3 / 3 | 30 / 10 / 10 | — | — |
| Video editing and extending | — | Yes | — | — |
| Max prompt length | 5,000 characters | 10,000 characters | 2,000 characters | 2,000 characters |
| Price per second (720p) | Mid | Highest | Low | Lowest |
1. Clip Length
Veo 3.1 makes clips of 4, 6 or 8 seconds. That suits social hooks, product shots and B-roll; for anything longer you generate several clips and cut them together.
Seedance 2.0 goes to 15 seconds and Seedance 2.5 to 30, in a single pass, so a whole scene keeps the same character, lighting and camera. Seedance 2.5 can also extend a clip forward or backward with the AI Video Extender.
Winner: Seedance.
2. Resolution and Look
Veo 3.1 Fast offers native 4K, and its short clips are very polished — a strong choice for a single hero shot. Seedance 2.0 also offers 4K. Both Seedance versions offer more aspect ratios, including 1:1, 4:3 and 21:9. Seedance 2.5 tops out at 1080p, which covers nearly all social and web video; for more, use the AI Video Upscaler.
Winner: tie between Veo 3.1 Fast and Seedance 2.0 for 4K; Seedance for aspect-ratio choice.
3. Sound
All of them generate sound with the picture — dialogue, effects and music. On Veo 3.1 Fast, sound is optional and costs more and Veo 3.1 Lite works the same way. On Seedance it is always included in the price, and Seedance can also follow reference audio you upload (up to 3 clips on 2.0, 10 on 2.5).
Winner: Seedance, for included sound and audio references.
4. References and Consistency
- Seedance 2.0 takes up to 9 images, 3 videos and 3 audio clips; Seedance 2.5 up to 30 images, 10 videos and 10 audio clips, tagged as
@image1,@video1,@audio1in the prompt. - Veo 3.1 works from up to 3 images in image-to-video, with no separate reference mode.
For a recurring character, a product that must look exactly right, or a specific camera move copied from a video, Seedance gives far more control.
Winner: Seedance, by a wide margin.
5. Editing
Seedance 2.5 can edit an existing clip — swap a product, background or style — in the AI Video Editor, and extend it. Veo 3.1 generates new clips only.
Winner: Seedance 2.5.
6. Price
Credits per clip on SeeVid:
| Clip | Seedance 2.0 | Seedance 2.5 | Veo 3.1 Fast (sound on) | Veo 3.1 Pro (sound on) | Veo 3.1 Lite (sound on) |
|---|---|---|---|---|---|
| 4 s, 720p | 44 | — | 28 | 112 | 13 |
| 8 s, 720p | 88 | 145 | 56 | 223 | 27 |
| 8 s, 1080p | 220 | 260 | 67 | 223 | 43 |
| 8 s, 4K | 449 | — | 167 | 335 | — |
| 15 s, 720p | 165 | 271 | — | — | — |
| 30 s, 720p | — | 542 | — | — | — |
Prices as of November 2026. The generator always shows the current price before you generate.
- Veo 3.1 Lite is the cheapest way to get a short clip, and cheaper still with sound off.
- Veo 3.1 Fast is the best value at 1080p and 4K for 8-second clips.
- Veo 3.1 Pro is Google's standard Veo 3.1 model with the same options as Fast, at two to four times the price; keep it for final renders.
- Seedance 2.0 costs more than Veo 3.1 Fast at 720p, but can run to 15 seconds and follow references.
- Seedance 2.5 costs the most per second but is the only one that does 30 seconds, editing and extending; its draft mode tests ideas at the 480p price.
See the Seedance 2.0 pricing and Seedance 2.5 pricing guides for details.
Winner on price: Veo 3.1 Lite for short tests, Veo 3.1 Fast for short 1080p/4K.
Which One for Which Job?
| Job | Pick | Why |
|---|---|---|
| Short 4K hero shot | Veo 3.1 Fast | Native 4K, lowest 4K price |
| Cheapest quick test | Veo 3.1 Lite | Lowest price per clip |
| 10–15 s clip with a recurring character | Seedance 2.0 | 9 reference images, 15 s |
| 30-second ad or story beat | Seedance 2.5 | 30 s in one pass |
| Product that must match the photo exactly | Seedance 2.0 or 2.5 | Reference images |
| Change or lengthen an existing clip | Seedance 2.5 | Editing and extending |
| Square or ultrawide format | Seedance 2.0 or 2.5 | 1:1, 4:3, 21:9 |
A Practical Workflow
- Explore ideas cheaply with Veo 3.1 Lite or Seedance 2.5 drafts.
- Produce short hero shots with Veo 3.1 Fast and longer, reference-heavy scenes with Seedance.
- Fix and extend with Seedance 2.5's editor and extender.
FAQ
Is Seedance better than Veo 3.1? For long clips, references and editing, yes. For short polished shots, 4K at a low price and the cheapest tests, Veo 3.1 is the better pick.
Which is cheaper? For short clips, Veo 3.1 Lite. For clips longer than 8 seconds, Seedance 2.0 — Veo 3.1 doesn't go past 8 seconds.
Do both generate sound? Yes. On Seedance it is always included; on Veo 3.1 Fast and Lite it is optional and costs extra.
Which one should I learn to prompt first? Seedance, if you make longer or reference-based videos — start with How to Use Seedance 2.0 and our 50 Seedance prompts.
Can I use both with one account? Yes. On SeeVid they share one credit balance; choose the model per generation in the AI Video Generator.
Conclusion
Use Veo 3.1 for short, polished shots and cheap 4K; use Seedance when a video needs to run longer, follow your references or be edited afterwards. On SeeVid you can run the same prompt on both and keep the better take.