Cheapest 4-second AI clip on Sume: the minimum-length math
A 4-second clip at 480p costs $1.07 on Seedance 2.5, $0.25 on Wan 3.0 and $0.15 on Gemini Omni Flash at 360p. MiniMax H3 starts at 5 seconds.
For a 4-second clip, Gemini Omni Flash at 360p is the cheapest on Sume at $0.15, Wan 3.0 at 480p is $0.25, and Seedance 2.5 at 480p is $1.074708. MiniMax H3 cannot make one: its minimum on Sume is 5 seconds. Four seconds is also the minimum for Seedance 2.5 and 2.0, so short loops pay for the full 4.
Minimum clip, cheapest tier
Each model has its own valid range on Sume, and the price is linear in seconds inside it. The lowest tier of each is used below.
| Model | Valid range | Cheapest tier per second | Shortest clip cost |
|---|---|---|---|
| gemini-omni-flash-1.1 | 3 to 10 s, 16:9 or 9:16 | 360p $0.0375 | 3 s: $0.1125; 4 s: $0.15 |
| wan-3.0 | 2 to 30 s | 480p $0.0625 | 2 s: $0.125; 4 s: $0.25 |
| minimax-h3 | 5 to 15 s | 480p $0.0625 | 5 s: $0.3125 |
| seedance-2 | 4 to 15 s | 480p $0.17577 | 4 s: $0.70308 |
| seedance-2.5 | 4 to 30 s | 480p $0.268677 | 4 s: $1.074708 |
Reading the table
Wan 3.0 is the cheapest model that goes as low as 2 seconds, at $0.125. A 4-second Seedance 2.5 clip costs 4.30 times the same clip on Wan 3.0 at the cheapest tier. Sume's price list shows a 4-second minimum billed for Seedance 2.5, so short loops pay at least $1.074708 at 480p.
Low tiers are for drafts. A 360p or 480p clip tells you whether the motion and composition work, and you can re-run the keeper at a higher tier. At 720p, a 4-second Wan 3.0 clip is $0.50 and a 4-second Seedance 2.5 clip is $2.3112.
Picking for a short loop
Native audio matters when you choose: Gemini Omni Flash on Sume always generates audio, so you pay for it whether or not you need a silent loop. Check generate_audio in GET /v1/videos/models for the others.
Details of the wire format and per-model limits are on the Video generation page. Prices come from the public catalog and can change, so re-read before a large batch.
- Silent draft loops: Wan 3.0 at 480p.
- Cheapest overall and audio is fine: Omni Flash at 360p.
- Seedance 2.5 has a 4-second minimum billed.
Reproduce the numbers
Every Sume price on this page comes from the public catalog at https://api.sume.com/v1/catalog, which needs no API key. Fetch it, find the row for the job or model named in the table, and multiply by your own seconds, characters or image count. Sume bills the list price shown in that row, so the catalog figure is the one that applies to your balance.
All figures on this page are Sume's own, as of 2026-10-09. Prices and limits can change, so re-read the catalog and the linked docs before a large run, and keep the arithmetic in a spreadsheet so you can update it in a minute.
Sources
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