Each extra second of Omni Flash costs 3.75 to 37.5 cents on Sume

One extra second of Gemini Omni Flash 1.1 on Sume costs 3.75 cents at 360p, 12.5 cents at 720p, 18.75 cents at 1080p and 37.5 cents at 4K. The clip total is that rate times the seconds, rounded up to a whole cent once per clip. Omni accepts 3 to 10 seconds, so the range of a single request spans seven extra-second steps at each resolution.

The rate behind each step

The Video Router docs say Sume bills the provider list times 1.25 for each output second, as a function of the resolution. The catalog list prices dated 2026-08-28 are $0.03, $0.10, $0.15 and $0.30 per second, and the catalog marks them as subject to change. Multiply by 1.25 and you get the billable rate.

Sume rounds each clip up to the next whole cent, so a clip total is ceil(seconds x rate), not a sum of fractional cents.

What a one-second step really adds at 720p

Because of the per-clip ceiling, the step between two lengths is not always the same number of cents. At 720p the rate is 12.5 cents, so odd lengths end in a half cent that rounds up. Going from 5 s to 6 s adds 12 cents and going from 6 s to 7 s adds 13. Over a whole batch the rounding adds up to at most one cent per clip, so it matters only when you count many tiny clips.

When one second matters

If your ad slot is flexible, trimming one second from a 10 s clip saves 12 cents at 720p and 37 or 38 cents at 4K. At 360p the same second saves under 4 cents, so for drafts the length rarely decides the budget; the resolution does. A 10 s draft at 360p is 38 cents, which is less than a 4 s clip at 1080p (75 cents).

The reverse also holds. One extra second at 4K (37.5 cents) costs as much as ten extra seconds at 360p (10 x 3.75 = 37.5 cents). Use the rate table to decide where the next dollar goes: more length, or more pixels.

Check it on a real job

Send the same prompt at two lengths and read usage.cost on the poll response of POST /v1/videos. The docs say usage.cost is the Sume billable amount, and that the submit step reserves the provider list times 1.25 for the request. Your own numbers should match the table above to the cent.

The same length at every tier

For reference, a 6-second Omni Flash clip at each resolution. Every price is the seconds times the billable rate, rounded up to a whole cent, as of 2026-10-08.

Limits to remember

These apply to every request on this page, from the Video Router and Video generation docs:

• Length is 3 to 10 whole seconds in generation modes; an edit takes no duration.
• Aspect ratio is 16:9 or 9:16; an edit takes no aspect ratio.
• Native synced audio is always on, and generate_audio: false is rejected.
• There is no bitrate_mode, no reference audio and no seed.
• Billing is the provider list times 1.25 per output second, reserved at submit and shown in usage.cost.