Both models run on Tovaki under one subscription. Below is a factual comparison drawn from this site's real billing and our own integration notes.
| Veo 3.1 | Veo 3.1 Fast | |
|---|---|---|
| Served via | ||
| Shortest shot · 720p | 4s → 232 | 4s → 60 |
| Credits/sec @720p | 58 | 15 |
| Longest shot · 720p | 8s → 464 | 8s → 120 |
| Shortest shot · 1080p | 4s → 232 | 4s → 72 |
| Available durations | 4 / 6 / 8s | 4 / 6 / 8s |
| Available resolutions | 720p / 1080p / 4k | 720p / 1080p / 4k |
| Typical generation time | about 180s | about 120s |
| Templates tuned for it | 0 | 0 |
Per finished second at 720p, Veo 3.1 Fast costs less (15 vs 58 credits/sec). Per-second is the comparable figure here because the two models have different shortest tiers (4s vs 4s).
Which one looks better depends on your material, and we won't decide that for you — run the same prompt through both; it costs a few dozen credits to find out.
Yes. Model is chosen per shot on the canvas, so one film can use different models for different shots.
No. One subscription covers every model in the catalog; you spend credits.
Veo 3.1 Fast is typically quicker (about 120s vs 180s), though real time varies with queue and resolution.