Gemini 2.5 Flash Preview (Sep '25) (Reasoning)
FrontierClosed weightsTextReasoning
Gemini family model by Google — reasoning.
Sep '25; preview
About the Gemini family
Google DeepMind's flagship family: natively multimodal with up to million-token context, in Pro (most capable), Flash (fast/cheap) and Flash-Lite (cheapest) tiers, across generations 1.0→3.6. Reasoning ('thinking') levels are configurable on modern versions.
All Gemini modelsHow this one is configured
This configuration runs in reasoning mode (thinks step-by-step before answering); version/snapshot: Sep '25; preview.
Who makes it
GoogleUnited StatesMaker of the Gemini frontier models and open-weight Gemma family.More from Gemini
- Gemini 1.0 Pro
- Gemini 1.0 Ultra
- Gemini 1.5 Flash (May '24)
- Gemini 1.5 Flash (Sep '24)
- Gemini 1.5 Flash-8B
- Gemini 1.5 Pro (May '24)
- Gemini 1.5 Pro (Sep '24)
- Gemini 2.0 Flash (experimental)
- Gemini 2.0 Flash (Feb '25)
- Gemini 2.0 Flash Thinking Experimental (Dec '24)
- Gemini 2.0 Flash Thinking Experimental (Jan '25)
- Gemini 2.0 Flash-Lite (Feb '25)
- Gemini 2.0 Flash-Lite (Preview)
- Gemini 2.0 Pro Experimental (Feb '25)
- Gemini 2.5 Flash (Non-reasoning)
- Gemini 2.5 Flash (Reasoning)
- Gemini 2.5 Flash Preview (Non-reasoning)
- Gemini 2.5 Flash Preview (Reasoning)
- Gemini 2.5 Flash Preview (Sep '25) (Non-reasoning)
- Gemini 2.5 Flash-Lite (Non-reasoning)
- Gemini 2.5 Flash-Lite (Reasoning)
- Gemini 2.5 Flash-Lite Preview (Sep '25) (Non-reasoning)
- Gemini 2.5 Flash-Lite Preview (Sep '25) (Reasoning)
- Gemini 2.5 Pro