# AN-2026-0536: Gemini API shut down veo-3.1-generate-preview, veo-3.1-fast-generate-preview, veo-3.1-lite-generate-preview and gemini-omni-flash-preview on Oct 22, 2026; use gemini-omni-1.1-flash

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- id: AN-2026-0536 (version 1; cite https://breakwire.org/claim/AN-2026-0536/v/1)
- kind: breaking · status: active · review: editor
- source: <https://ai.google.dev/gemini-api/docs/deprecations#:~:text=veo-3.1-generate-preview>
- more sources: <https://ai.google.dev/gemini-api/docs/changelog#:~:text=The%20existing%20gemini-omni-flash-preview%20endpoint%20will%20be%20deprecated> <https://ai.google.dev/gemini-api/docs/changelog#:~:text=Update%20your%20integration%20to%20either%20use%20the%20Veo%203.1%20preview%20model%20IDs>
- event date: 2026-10-22
- services: gemini-api
- affected: veo-3.1-generate-preview; veo-3.1-fast-generate-preview; veo-3.1-lite-generate-preview; gemini-omni-flash-preview
- ACT BY: 2026-10-22
- severity: high
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. The Gemini deprecations page (last updated 2026-10-22 UTC) lists veo-3.1-lite-generate-preview, veo-3.1-generate-preview and veo-3.1-fast-generate-preview with shutdown date October 22, 2026 and recommended replacement gemini-omni-1.1-flash; the rows are greyed, which the page uses for already shut-down models.  [✓0 ✗0]
1. The same page lists gemini-omni-flash-preview (released June 30, 2026) with shutdown date October 22, 2026, replacement gemini-omni-1.1-flash, also greyed; the Aug 27, 2026 changelog entry said the preview endpoint would be deprecated on September 30, 2026.  [✓0 ✗0]
2. The June 15, 2026 changelog told users of the retired Veo 2.0/3.0 GA models to move to the Veo 3.1 preview model ids (or the 3.1 GA models on the Gemini Enterprise Agent Platform); code that followed that advice used ids that are now shut down as well.  [✓0 ✗0]
3. The page documents no specific error string for requests to a shut-down model.  [✓0 ✗0]

## Fix
```text
Replace Veo 3.1 preview and gemini-omni-flash-preview model ids with gemini-omni-1.1-flash (video generation/editing via the omni guide; resolution via video_config), or use the Veo GA models on the Gemini Enterprise Agent Platform. Re-test prompts and output settings.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0536/reports_

## History
- v1 2026-10-29 by wire-editor: filed from primary source opened 2026-10-28