Veo 3.1 Fast vs Gemini Omni Flash: 10 seconds at 720p, $1.00 vs $1.01

On Google's Gemini API price page, a 10-second 720p clip costs $1.00 on Veo 3.1 Fast and about $1.01 on Gemini Omni Flash, so the two are within a cent of each other. Veo 3.1 Lite is half of that at $0.50 and Veo 3.1 Standard is four times it at $4.00. Neither Omni Flash nor Veo has a free tier in the Gemini API.

What the pages say about choosing

Google's video guide tells developers to use Gemini Omni Flash as the default model, citing coherence, mixed text, image, audio and video inputs, character consistency and multi-turn editing. It points to Veo 3.1 when you need specific capabilities such as scene extension or last-frame control, or when a legacy pipeline already depends on it. Veo 3.1 supports video extension and frame-specific generation through generateContent, while Omni Flash is driven through the Interactions API for multi-turn refinement.

Both pricing rows are billed only for successful output. The Veo note says you are charged only if the video is generated successfully.

Higher resolutions

Veo 3.1 Fast rises to $0.12 per second at 1080p and $0.30 at 4K, Standard to $0.60 at 4K, and Lite to $0.08 at 1080p with no 4K output. Omni Flash is a single token rate, so its per-second price depends on how many tokens a second of the chosen resolution uses; the page states the 5,792 figure only for 720p, so we do not derive 1080p or 4K prices for Google.

What Sume lists

Sume lists gemini-omni-flash-1.1, not Veo. Its catalog rows are $0.0375 per second at 360p, $0.125 at 720p, $0.1875 at 1080p and $0.375 at 4K, for 3 to 10 seconds in 16:9 or 9:16, with native synced audio. A 10-second 720p clip is 10 x $0.125 = $1.25. That is Google's roughly $0.10 per second effective price times Sume's 1.25 multiple: $0.10 x 1.25 = $0.125.

The video docs say gemini-omni-flash-1.1 takes image and video input references and offers video edit through the Video Router video_url field. They do not list audio references for it.

A budget for ten drafts

Ten 10-second 720p drafts cost 10 x $1.00 = $10.00 on Veo 3.1 Fast, 10 x $0.50 = $5.00 on Lite and about $10.14 on Omni Flash. If you then render two finals on Veo 3.1 Standard at 1080p, that is 2 x 10 x $0.40 = $8.00. A Lite-draft, Standard-final plan is $13.00 in total against $23.00 for an all-Fast plan with the same two finals at Standard.