A 20-second single shot: only Seedance 2.5 and Wan 3.0 take it

Only two Sume video models accept a 20-second request: Seedance 2.5 at $11.56 for 720p and Wan 3.0 at $2.50 for 720p (as of 2026-10-08). Every other row in the video catalog tops out at 15 s or lower.

Who accepts 20 s

From the catalog: Seedance 2.5 accepts 4 to 30 s, Wan 3.0 accepts 2 to 30 s, Seedance 2.0, Fast and Mini accept 4 to 15 s, Gemini Omni Flash 1.1 accepts 3 to 10 s, and MiniMax H3 accepts 5 to 15 s. That leaves two.

What 20 s buys

20 s is long enough for one scene with an action, a reaction and a settle. If you cannot cut, you pay for the whole duration up front, and a failed take costs the full price. At 1080p on Seedance 2.5 that is $28.44 per attempt.

If the scene can be cut at 10 s, two 10 s shots cost the same within a cent (Seedance 2.5 720p: 2 x 578 = 1156 cents) and let you retake half. Joining adds $0.10 for a render of one minute or less.

Alternatives that stay under 15 s

For a 20 s total you can also cut the scene into three shots on Seedance 2.0 at 720p: 6 s, 6 s and 8 s cost $2.27 + $2.27 + $3.03 = $7.57, against $11.56 for one 20 s Seedance 2.5 clip. Add $0.10 for the Timeline render.

That is not a like-for-like trade. One continuous shot keeps motion and light consistent; three shots rely on your references and cuts.

Duration steps

The grid prices 4, 5, 6, 8, 10, 12, 15, 20, 25 and 30 s for Seedance 2.5, and 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25 and 30 s for Wan 3.0. A 17 s or 22 s request is not in the grid, so confirm the price with a plan or a test job before you rely on it.

A 25 s shot on Seedance 2.5 costs $14.45 at 720p, and on Wan 3.0 it costs $3.13.

Check the number yourself

To confirm the figure behind this post, read the wan-3.0 entry from GET /v1/video-router/models and check that 20 s and 1080p are inside its duration_seconds and resolutions. The grid price for that cell is 500 cents ($5.00). It is the provider list price times 1.25, rounded up to the next cent for the job, as of 2026-10-08.

Use an Idempotency-Key on every create call so a retry cannot start a second paid job, then poll the job until it is complete and download the file from the result. Media inputs for Timeline or for references must be hosted files, so import them first.

None of the prices here say anything about picture quality, motion or how well a model follows a prompt. Prices can change when a provider changes its list, which is why every table carries a date. Re-read the catalog before you commit a large batch, and run one test job at the exact setting you plan to use.