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Google releases Gemini 2.5 Flash preview with controllable reasoning

Google released an early Gemini 2.5 Flash checkpoint through the Gemini API, Google AI Studio, Vertex AI and the Gemini app, with hybrid reasoning and developer-controlled thinking budgets.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM45confidence 94/100

Why it moved the index

A lower-cost controllable reasoning model made improved capability broadly accessible across consumer, developer and enterprise surfaces, increasing practical automation reach.

Assessment history

  1. R1
    Toward 45 · confidence 94

    New exact dated preview checkpoint with no durable identity or event collision.

    12 Aug 2026

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DoomBench social sharing card for Google releases Gemini 2.5 Flash preview with controllable reasoning.

  1. DoomBench assesses “Google releases Gemini 2.5 Flash preview with controllable reasoning” as evidence moving toward doom, with magnitude 45 and confidence 94 out of 100 in the deployment reach category.

  2. The DoomBench assessment of “Google releases Gemini 2.5 Flash preview with controllable reasoning” is based on reporting from Google and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Google releases Gemini 2.5 Flash preview with controllable reasoning” as follows: Google released an early Gemini 2.5 Flash checkpoint through the Gemini API, Google AI Studio, Vertex AI and the Gemini app, with...

    https://www.doombench.com/news/google-releases-gemini-2-5-flash-preview-with-controllable-reasoning-2025-04-17