Gemini 2.5 Flash Preview September 2025 Checkpoint is Google’s high-performance model, built for advanced reasoning, code generation, mathematical tasks, and scientific applications. This version introduces faster, more efficient output and smarter tool use for complex, multi-step workflows.
Retired on Aug 22, 2026: requests to this model ID now return an error. These models are live and work with the same API key.
Gemini 2.5 Flash Preview September 2025 Checkpoint is Google’s high-performance model, built for advanced reasoning, code generation, mathematical tasks, and scientific applications. This version introduces faster, more efficient output and smarter tool use for complex, multi-step workflows.
No. Gemini 2.5 Flash Preview 09-2025 was retired on NagaAI on Aug 22, 2026, and requests to it now return an error. Live models you can use instead with the same API key: Gemini 4 Argon, Nano Banana 2.1 and Gemini 3.8 Flash.
It takes text, images, files and audio as input and returns text.