Seedance 2.5 vs Veo 3.1 Fast

Both Seedance 2.5 and Veo 3.1 Fast are available on Scenes AI. Only Veo 3.1 Fast has a measured quality score, so this page does not rank them on picture quality — comparing a real number against an unmeasured one would be inventing a result. It compares what is measured instead: price, scene length. Every figure below comes from the same catalogue that bills your account.

What actually differs

These two match on most of the 10 specifications below; they differ on 6.

Seedance 2.5
Longest single shot — up to 30s unbroken · 30 reference images · 1080p
Veo 3.1 Fast
Balanced quality and cost · strongest in-video audio
  • Veo 3.1 Fast starts at $0.049 per second against $0.18 for Seedance 2.5 — 3.75x the rate for the same second of finished video.
  • Seedance 2.5 holds a single unbroken shot for 30s against 8s on Veo 3.1 Fast, so a beat longer than 8s has to be cut across two clips on Veo 3.1 Fast.
  • In-video audio is optional on Seedance 2.5 and always on on Veo 3.1 Fast.
  • Seedance 2.5 accepts 30 reference images per scene against 3 on Veo 3.1 Fast — that is how many characters and locations you can pin at once.
  • Seedance 2.5 tops out at 1080p and Veo 3.1 Fast at 4k.
  • Seedance 2.5 offers 7 aspect ratios against 2 on Veo 3.1 Fast (16:9, 9:16).

Side by side

Specifications and rates, straight from the live catalogue.

Seedance 2.5 compared with Veo 3.1 Fast
SpecSeedance 2.5Veo 3.1 Fast
Made byByteDanceGoogle
Quality score—68/100
BillingPer second of outputFlat, per clip
From (per second)$0.18$0.049
Longest scene30s8s
Aspect ratios7 (1:1, 4:3, 3:4, 16:9, 9:16, 21:9, adaptive)2 (16:9, 9:16)
Resolutions480p, 720p, 1080p720p, 1080p, 4k
Reference images303
Scene-to-scene morphYesYes
In-video audioOptionalAlways on

Which should you pick?

Veo 3.1 Fast is the cheaper of the two at 3.75x less per second, which makes it the one to draft on whichever you eventually publish with. Beyond rate, pick on the differences above rather than on a quality ranking we have not measured for Seedance 2.5. Because Scenes AI shows a scrubbable preview before any clips are bought, you can settle the structure cheaply and commit once.

Price your own video with either engine on the pricing page, or read the full specs for Seedance 2.5 and Veo 3.1 Fast.

Related

FAQ

Common questions

Can't find what you're looking for? Visit help and support or email hello@usescenes.com and a human will reply.

We cannot say. Veo 3.1 Fast has a measured quality score (68 out of 100); Seedance 2.5 has not been through the same image-to-video preference testing, so the table shows a dash rather than a guess. Comparing a real number against an absent one would be inventing a result, so pick on the differences that are measured instead.