# Google DeepMind — Gemini 3.5 Flash deprecation

- Company: Google DeepMind (deepmind.google)
- Announced: 2026-10-08
- Category: deprecation
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://ai.google.dev/gemini-api/docs/changelog#10-08-2026
- Record: https://forck.live/items/23995-gemini-3-5-flash-deprecation
- Subject: Gemini API
- Models affected: gemini-3.5-flash, gemini-3.6-flash, gemini-3.8-flash

Google DeepMind has deprecated gemini-3.5-flash, replacing it with gemini-3.6-flash and automatically routing API requests to the newer model. Users can no longer select gemini-3.5-flash in Google AI Studio, and existing API calls are redirected without breaking. The company advises developers to update their model string to gemini-3.6-flash or gemini-3.8-flash and consult the Gemini 3.6 Flash guide.

## Evidence

Verbatim from https://ai.google.dev/gemini-api/docs/changelog#10-08-2026:

> gemini-3.5-flash is deprecated and has been replaced by gemini-3.6-flash. It is no longer available to select in Google AI Studio, and API requests to gemini-3.5-flash are automatically routed to gemini-3.6-flash.

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Record: https://forck.live/items/23995-gemini-3-5-flash-deprecation
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md