This guide has been updated. The Gemini 2.5 model family has been superseded by the Gemini 3.x generation, including Gemini 3.5 Flash, Gemini 3.1 Pro, Gemini Omni, and Deep Think.
Please read the updated guide: Google Gemini 3.5 Complete Guide 2026
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Google Gemini 2.5 Guide — Updated
This guide has been updated to cover the current Gemini 3.x model family. Please see the new guide at the link below.
Google GeminiAI Models
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