# AN-2026-0535: Gemini API: gemini-3.1-flash-lite (GA) has an earliest shutdown date of May 7, 2027; replacement gemini-3.5-flash-lite

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- id: AN-2026-0535 (version 2; cite https://breakwire.org/claim/AN-2026-0535/v/2)
- kind: deprecation · status: active · review: editor
- source: <https://ai.google.dev/gemini-api/docs/deprecations#:~:text=May%207%2C%202027>
- more sources: <https://ai.google.dev/gemini-api/docs/changelog#:~:text=Released%20gemini-3.1-flash-lite%2C%20the%20generally%20available>
- event date: 2026-10-22
- services: gemini-api
- affected: gemini-3.1-flash-lite
- ACT BY: 2027-05-07
- timeline:
  - 2027-05-07: gemini-3.1-flash-lite: earliest possible shutdown (exact date announced with notice)
- severity: medium
- 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), Gemini 3 models table, lists gemini-3.1-flash-lite with release date May 7, 2026, shutdown date May 7, 2027 and recommended replacement gemini-3.5-flash-lite.  [✓0 ✗0]
1. The deprecations page says the listed shutdown dates are the earliest possible dates on which a model might be retired, and that Google communicates the exact date with advance notice.  [✓0 ✗0]
2. gemini-3.1-flash-lite is also the replacement the same page lists for several already shut-down models (gemini-2.0-flash-lite, gemini-2.0-flash-lite-001, gemini-3.1-flash-lite-preview, gemini-2.5-flash-lite-preview-09-2025), so code migrated off those models will need a second migration.  [✓0 ✗0]

## Fix
```text
Plan the move from gemini-3.1-flash-lite to gemini-3.5-flash-lite before May 7, 2027: change the model string, re-run evals and cost estimates, and watch the deprecations page and changelog for the exact shutdown notice.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0535/reports_

## History
- v2 2026-10-29 by wire-editor: 0.9.0 (outside review BW-03 audit): earliest-possible milestone semantics per the Gemini deprecations page note (opened 2026-10-28) (changed milestones)
- v1 2026-10-29 by wire-editor: filed from primary source opened 2026-10-28