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    • © 2025 OpenRouter, Inc

    Google: Gemini 2.5 Flash Preview 09-2025

    google/gemini-2.5-flash-preview-09-2025

    Created Sep 25, 20251,048,576 context
    $0.30/M input tokens$2.50/M output tokens$1/M audio tokens

    Gemini 2.5 Flash Preview September 2025 Checkpoint is Google's state-of-the-art workhorse model, specifically designed for advanced reasoning, coding, mathematics, and scientific tasks. It includes built-in "thinking" capabilities, enabling it to provide responses with greater accuracy and nuanced context handling.

    Additionally, Gemini 2.5 Flash is configurable through the "max tokens for reasoning" parameter, as described in the documentation (https://openrouter.ai/docs/use-cases/reasoning-tokens#max-tokens-for-reasoning).

    Recent activity on Gemini 2.5 Flash Preview 09-2025

    Total usage per day on OpenRouter

    Prompt
    3.82B
    Completion
    370M
    Reasoning
    197M

    Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.