gemini-2.5-flash-preview-09-25

gemini-2.5-flash-preview-09-25 (Gemini API) was shut down on Feb 17, 2026; calls to it fail. Gemini API recommends gemini-3.6-flash instead.

Provider

Gemini API

Shutdown

Feb 17, 2026 (already shut down)

Announced

—

Replace with

gemini-3.6-flash

Also written as

gemini-2.5-flash-preview-09-2025, models/gemini-2.5-flash-preview-09-2025, models/gemini-2.5-flash-preview-09-25

• Naming mismatch: deprecations table and changelog shutdown entry say 'gemini-2.5-flash-preview-09-25', but the 2025-09-25 launch entry calls it 'gemini-2.5-flash-preview-09-2025'. Both strings included.

Source: https://ai.google.dev/gemini-api/docs/deprecations · report a wrong date