Veo 3.1 clips are 4, 6 or 8 s: when 10 s needs Omni instead

Veo 3.1 in the Gemini API supports only 4, 6 or 8 second clips, so a single 10 second shot is not available from it. Gemini Omni Flash outputs 3 to 10 seconds at 360p, 720p, 1080p and 4K, and Sume exposes it as gemini-omni-flash-1.1. Sume does not list a Veo id, so Veo itself is not callable there.

Sources are Google's Veo 3.1 docs, the Gemini Omni Flash model page and the Gemini API pricing page, read on 2026-10-03.

Duration side by side

Veo's docs add that 8 seconds is required for extension, reference images and for 1080p and 4k. Omni's page has no such coupling: durations from 3 to 10 seconds are listed at every resolution.

Price per second as published

Google's pricing page lists Veo 3.1 Standard at $0.40 per second at 720p and 1080p and Fast at $0.10 at 720p. Omni is listed at about $0.10 per second at 720p. A 10 second Omni clip at the list price is 10 x 0.10 = $1.00; on Sume at list x 1.25 that is $1.25. Veo Fast at 8 seconds and 720p is 8 x 0.10 = $0.80 at Google's price, and only on Google's own API.

Pick by what the shot needs

If your edit calls for a 10 second beat, Omni removes the stitching. If you need Veo's 4 second or 6 second lengths or its extension chain, you would call Google directly; that is outside Sume's catalog. A 10 second Omni request is below.

curl -X POST https://api.sume.com/v1/video-router/generate \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: omni-10s-001" \
  -d '{
    "model": "gemini-omni-flash-1.1",
    "prompt": "In a single continuous shot, a hot air balloon rises over a misty valley at sunrise.",
    "resolution": "720p",
    "duration": 10,
    "aspect_ratio": "16:9",
    "mode": "async"
  }'

Where to read more

The Video Router docs list capabilities and the live catalog. Check Google's pages again before you budget, since prices and limits change.