Video model comparison
Seedance 2.5 vs Veo 3.1
Two flagship video models with genuinely different shapes: one stretches to thirty seconds and carries fifty references, the other renders eight seconds you can reproduce exactly. This is what separates them, and when each one is the right call.
Every figure below is read from Imgo's model registry, the same specs requests are validated against, so the table cannot drift from them. Being in the registry is not the same as being live: the availability note says which models can be generated today.
Run this comparison yourself
Same prompt, same aspect ratio — only the model changes. Run it on each one and judge the difference on your own screen.
Test prompt · Aspect ratio 16:9
Night market street food stall: a cook tosses noodles in a flaming wok, oil hisses and the flame roars, steam drifts under string lights, crowd chatter and a distant scooter horn in the background. Handheld medium shot slowly pushing in.
Seedance 2.5 isn't generatable on Imgo yet.
Veo 3.1 isn't generatable on Imgo yet.
- Run it on Seedance 2.0 instead
Side by side
| Capability | Seedance 2.5 | Veo 3.1 |
|---|---|---|
| Clip length | 5 / 10 / 15 / 20 / 25 / 30s | 4 / 6 / 8s |
| Resolution | 720p / 1080p / 4K | 720p / 1080p / 4K |
| Aspect ratios | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 | 16:9, 9:16 |
| Start / end frame | Yes | Yes |
| Reference images | 50 | 3 |
| Reference video | Yes | No |
| Native audio | Yes | Yes |
| Reproducible seed | No | Yes |
Choose Seedance 2.5 when…
The shot runs past eight seconds, the same source has to produce vertical and square cuts, or a character and product must stay recognisable across every scene. Fifty reference slots and reference-video input are the reason.
Choose Veo 3.1 when…
The shot is short and has to look expensive, or the result has to be reproducible. It is the only one of the two with a seed, so a take you approve today renders the same way next quarter.
Two constraints worth knowing first
- Veo renders eight seconds whenever the output is 1080p or 4K, or whenever the run starts from a frame — whatever duration was requested. Budget for eight at those settings.
- Veo accepts an end frame only alongside a start frame. Sending an end frame on its own is a request-shape error, not a fallback.
One prompt, any live model
Picking a video model usually means integrating one and living with it, because rewiring a pipeline costs more than the model choice ever saves. In Imgo the model is a field on the request: once a model is live in the catalog, the same prompt can go to it and to any other live model, and you keep whichever take the shot needed — one integration, one credit balance. The availability note at the top says which models run today.