Seedance 2 Mini vs Fast: a steady 1.6x price over 500 clips
Seedance-2-fast costs about 1.6x seedance-2-mini on Sume at every resolution: $210 more over 500 clips at 480p, $450 at 720p, $1,020 at 1080p.
seedance-2-fast costs about 1.6 times seedance-2-mini on Sume at every resolution, so the extra you pay for Fast over Mini on 500 clips of 8 seconds is $210.00 at 480p, $450.00 at 720p and $1,020.00 at 1080p. Both models accept 4 to 15 seconds, the same aspect ratios, reference inputs and end frames, so the question is only whether the quality gap is worth 1.6 times.
Seedance is the family most often named as a replacement for a lost sora-2 workflow, and Sume lists several of its variants. This post compares the two cheapest on price alone, at the library size where the difference starts to matter.
The ratio at three resolutions
Both models are metered per 1,000 video tokens. Mini's list price is $0.007 per 1,000 tokens and Fast's is $0.0112, a ratio of exactly 1.6. After Sume's 1.25 factor and per-clip rounding up to the cent, the ratio in cents wobbles a little around 1.6.
| Resolution | seedance-2-mini | seedance-2-fast | Ratio | Extra for Fast over 500 clips |
|---|---|---|---|---|
| 480p | $0.71 | $1.13 | 1.59 | $210.00 |
| 720p | $1.52 | $2.42 | 1.59 | $450.00 |
| 1080p | $3.41 | $5.45 | 1.60 | $1,020.00 |
What the ratio means for a choice
A steady ratio means the choice does not change with resolution. You cannot find a resolution where Fast is cheap relative to Mini. If a test on 20 prompts shows Fast is clearly better at 720p, it will be clearly better at 1080p, and it will cost 1.6 times as much at both.
It also means the saving from drafting at a lower resolution is a resolution saving, not a model saving. Going from 1080p to 720p on Mini cuts an 8-second clip from 341 to 152 cents, which is more than the whole gap between Mini and Fast at 720p (90 cents).
A fair test between the two
Take 20 prompts that represent the library, run all 20 on both models at the resolution you will ship, and look at them next to each other with the names hidden. At 720p that test costs 20 x 152 = 3,040 cents on Mini and 20 x 242 = 4,840 cents on Fast, $78.80 together.
If the reviewers cannot tell which is which in more than half the pairs, take Mini and keep the $450.00 you would have spent over 500 clips at 720p. If they can tell, decide whether the clips that need the better look are all 500 or just a subset, and run the subset on Fast.
- Both models report audio in the catalog; check
generate_audioinGET /v1/videos/models. - Prices are for 8 seconds; other lengths scale almost linearly.
- seedance-2.5 and seedance-2 are separate catalog entries with their own prices.
Sources
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