Gemini API deprecations: 2.5 Pro auto-redirects to 3.8 Flash on Dec 1

patloeber · x · 2026-11-04

Developer patloeber flags upcoming Gemini API deprecations: Gemini 2.5 Pro will be deprecated on Dec 1 and auto-redirected to 3.8 Flash, while Gemini 2.5 Flash will be redirected to 3.5 Flash-Lite on the same date. Advanced integrations require action — devs should review the official deprecation notes and breaking API changes in the migration guides.

Related event: Gemini API Sunsets 2.5 Pro, Auto-Redirecting to Newer Models from December 1(2 posts)→

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