Gemini 2.5 Flash Preview 09 25 retirement date: February 17, 2026
Retired on February 17, 2026; requests to gemini-2.5-flash-preview-09-25 now fail.
- Provider
- Google (Gemini API)
- Model IDs affected
gemini-2.5-flash-preview-09-25- Shutdown date
- February 17, 2026
- Replacement
- gemini-3.6-flash
- Platforms
- Dates apply to the Gemini API and are the earliest possible shutdown dates Google publishes. If you use Gemini through another platform, check that platform's own schedule.
- Source
- Official Google (Gemini API) deprecations page (data last changed 2026-11-02, re-checked daily)
Migrating from Gemini 2.5 Flash Preview 09 25 to Gemini 3.6 Flash
Not yet reviewed. We haven't written model-specific migration notes for Gemini 2.5 Flash Preview 09 25 yet. Start with the provider's official guidance and the replacement's model page, and use this general checklist:
- Search your code, config and environment variables for
gemini-2.5-flash-preview-09-25. - Re-run your evaluation set against gemini-3.6-flash before switching traffic.
- Recount tokens with the new model's tokenizer and re-check
max_tokens, context fit and cost. - Check tool calling, structured output and stop sequences on your real prompts.
- Dates apply to the Gemini API and are the earliest possible shutdown dates Google publishes. If you use Gemini through another platform, check that platform's own schedule.
Check your code before Feb 17
Also shutting down on February 17, 2026
- Imagen 4.0 Generate Preview 06 06
imagen-4.0-generate-preview-06-06 - Imagen 4.0 Ultra Generate Preview 06 06
imagen-4.0-ultra-generate-preview-06-06 - chatgpt-4o-latest
chatgpt-4o-latest
All model retirements · All Google (Gemini API) deprecations
FAQ
When was Gemini 2.5 Flash Preview 09 25 retired?
Gemini 2.5 Flash Preview 09 25 (gemini-2.5-flash-preview-09-25) was retired on the Gemini API on February 17, 2026, according to the official Gemini API deprecations page. Requests to it now fail.
What should I use instead of gemini-2.5-flash-preview-09-25?
The recommended replacement is gemini-3.6-flash.
What happens to gemini-2.5-flash-preview-09-25 requests after the shutdown date?
After a model is retired, API requests to it return an error. Move traffic to the replacement and test it on your own prompts before the date.
Does this date apply to Amazon Bedrock, Vertex AI or Azure?
Dates apply to the Gemini API and are the earliest possible shutdown dates Google publishes. If you use Gemini through another platform, check that platform’s own schedule.