Flow offers Omni at 360p and 720p; the API lists 1080p and 4K

Google Flow's models page lists Gemini Omni Flash 1.1 with 360p and 720p options (read 2026-10-02), while the Gemini API page lists 360p, 720p, 1080p and 4K, with 4K upscaled and 720p the default. Sume's gemini-omni-flash-1.1 lists the same four tiers. Pick by where the clip ends up: a draft in Flow, a delivery file through the API.

Three Google pages, one model

Flow's help table shows Omni Flash 1.1 at 360p and 720p (Flow Help, read 2026-10-02). The Gemini API page lists 360p, 720p, 1080p and 4K (upscaled), 16:9 default and 9:16 (Gemini API docs, read 2026-10-02). Google's developer blog says 360p is up to 60 percent faster and one third the cost of 720p (Google blog, read 2026-10-02).

On Sume

gemini-omni-flash-1.1 runs 3 to 10 seconds at 360p, 720p, 1080p and 4K, in 16:9 or 9:16 with native audio, through resolution on the video routes (Video generation). Billing is provider list times 1.25 per output second by resolution, and the rate by tier is on the models endpoint.

Edits through video_url default to 720p and take no aspect_ratio or duration.

A draft then final workflow

Run the prompt at 360p first to check motion and audio, then repeat the exact prompt at the delivery tier. Because Sume has no seed field, the second run is a new draw, not the same clip bigger; use the draft to check the idea, not to lock the frames.

If the real need is a still frame for a thumbnail, take it from the final render, not the draft.

Which surface for which job

Flow is where Google surfaces what each plan includes in the app. For output you place into an ad, a storefront or a timeline, the 1080p or 4K tiers come from an API, and you should confirm the tier on that surface before promising it to a client.