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Cloud Changelog
November 2, 2026 · Google Gemini APIDeprecation
Action needed · Due Dec 1, 2026
Gemini 2.5 Pro and 2.5 Flash deprecated, requests reroute on December 1, 2026
- Gemini 2.5 Pro deprecation:
gemini-2.5-prois deprecated and is no longer available to select in Google AI Studio. Effective December 1, 2026, all API requests togemini-2.5-prowill automatically route togemini-3.8-flashand be billed at Gemini 3.8 Flash rates. Before December 1, 2026, update your model string togemini-3.8-flashand review the Gemini 3.8 Flash migration guide. Breaking API changes include function calling andthought_signaturevalidation,thinking_levelreplacingthinking_budget, and removed sampling parameters and prefilled model turns. - Gemini 2.5 Flash deprecation:
gemini-2.5-flashis deprecated and is no longer available to select in Google AI Studio. Effective December 1, 2026, all API requests togemini-2.5-flashwill automatically route togemini-3.5-flash-liteand be billed at Gemini 3.5 Flash-Lite rates. Before December 1, 2026, update your model string togemini-3.5-flash-liteand review the Gemini 3.5 Flash-Lite migration guide. Breaking API changes include function calling andthought_signaturevalidation,thinking_levelreplacingthinking_budget, and removed sampling parameters and prefilled model turns.