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Capability gains

Gemini 3 Deep Think advances frontier reasoning for science and engineering

Google DeepMind released an upgraded specialized reasoning mode with 84.6% on ARC-AGI-2, broad frontier evaluations, Ultra access, and selected API access. Early testers reported finding a peer-review flaw and producing a semiconductor fabrication recipe.

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CURRENT ASSESSMENT · REVISION 1
TOWARD DOOM48confidence 78/100

Why it moved the index

Strong general reasoning, demonstrated difficult scientific work, and new access advance frontier capability, while specialized and restricted access limits the effect.

Assessment history

  1. R1
    Toward 48 · confidence 78

    New dated primary-source frontier model release absent from durable context.

    11 Aug 2026

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  1. DoomBench assesses “Gemini 3 Deep Think advances frontier reasoning for science and engineering” as evidence moving toward doom, with magnitude 48 and confidence 78 out of 100 in the capability gains category.

  2. The DoomBench assessment of “Gemini 3 Deep Think advances frontier reasoning for science and engineering” is based on reporting from Google and records the editorial rationale, source quality, attribution, and revision history.

  3. DoomBench summarizes “Gemini 3 Deep Think advances frontier reasoning for science and engineering” as follows: Google DeepMind released an upgraded specialized reasoning mode with 84.6% on ARC-AGI-2, broad frontier evaluations, Ultra...

    https://www.doombench.com/news/gemini-3-deep-think-advances-frontier-reasoning-for-science-and-engineering-2026-02-12