Veo 3.1 preview ends October 22: what to change in each request

Google's deprecations page lists veo-3.1-generate-preview, veo-3.1-fast-generate-preview and veo-3.1-lite-generate-preview with an October 22, 2026 shutdown and gemini-omni-1.1-flash as the replacement (Google deprecations, read 2026-10-09). If you called those ids directly, you need a new model id and a new length range, not only a rename. On Sume the same Omni model is the catalog id gemini-omni-flash-1.1, sent to POST /v1/videos.

Which Google ids end, and when?

The page also shows older Veo 2 and Veo 3 ids that already ended on June 30, 2026, and no shutdown date for gemini-omni-1.1-flash.

What changes in the request?

Google's Veo 3.1 page lists lengths of 4, 6 or 8 seconds, with reference images up to three. Google's Omni page lists 360p, 720p (default), 1080p and 4K, and 16:9 or 9:16. Sume's Omni row takes 3 to 10 seconds, so any Veo length stays valid.

• Model id: send gemini-omni-flash-1.1 to Sume, not the Google id.
• Length: duration is whole seconds from 3 to 10.
• Audio: Omni on Sume always generates audio, and the API rejects generate_audio: false.
• References: Sume accepts up to 10 images and up to 3 reference clips of 3 seconds each, so three Veo reference images fit.
• Edits: send a clip as video_url and describe the change in the prompt.

Does Sume list Veo itself?

No. The Sume video catalog does not list a Veo id (catalog read 2026-10-09). Read GET /v1/videos/models for the live list before you pin anything, as the video generation docs advise.

What does one request look like?

An 8-second 720p clip that you ran on Veo 3.1 Fast becomes the call below. At Sume's 720p rate of $0.125 a second it reserves and bills $1.00.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: veo-swap-001" \
  -d '{"model":"gemini-omni-flash-1.1","prompt":"A ceramic mug on a desk, slow push-in, soft morning light","duration":8,"resolution":"720p","aspect_ratio":"16:9"}'