15 vs 30-second vertical clip on Sume: cost by model at 720p
At 720p a 15 s clip costs $1.13 on H3 and $8.67 on Seedance 2.5. Only Wan 3.0 and Seedance 2.5 reach 30 s: $3.75 and $17.33. Full table.
Prices are the per-second Sume rates, list times 1.25, multiplied by the length. MiniMax H3 is native 768p, so its row uses 768p. Kling 3 is shown with audio on ($0.21 a second); audio off is $0.14.
Cost of one clip
Models limited to 15 s show n/a in the 30 s column.
| Model | Max seconds | 15 s | 30 s |
|---|---|---|---|
| minimax-h3 (768p) | 15 | $1.13 | n/a |
| minimax-h3-max (768p) | 15 | $1.50 | n/a |
| wan-3.0 | 30 | $1.88 | $3.75 |
| kling-3 (audio on) | 15 | $3.15 | n/a |
| seedance-2-mini | 15 | $2.84 | n/a |
| seedance-2-fast | 15 | $4.54 | n/a |
| seedance-2 | 15 | $5.67 | n/a |
| seedance-2.5 | 30 | $8.67 | $17.33 |
Why Seedance costs more per second
Seedance is token-priced: tokens per second are width x height x 24 / 1024, then the list rate per 1,000 tokens, then the 1.25 margin. A 720x1280 frame is 21,600 tokens per second. Wan is a flat $0.125 per second at 720p.
The gap
For the same 30 seconds, Wan 3.0 is $3.75 against $17.33 for Seedance 2.5. Whether the difference is worth it is a judgement about the shot, not the price list.
Sources
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