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METR finds low sabotage risk in Claude Opus 4 and 4.1 after independent review

METR reviewed unredacted evidence and agreed that catastrophic sabotage risk from Claude Opus 4 and 4.1 was low, while warning that reasoning-hiding and evaluation-awareness claims were overconfident. Anthropic said the review led it to revise threat models and alignment practices, including training changes for reasoning monitorability.

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CURRENT ASSESSMENT · REVISION 1
AWAY FROM DOOM40confidence 84/100

Why it moved the index

Independent access to nonpublic evidence, concrete review findings, and documented changes to Anthropic's threat models and monitoring-oriented training directly strengthen controls against autonomous sabotage.

Assessment history

  1. R1
    Away 40 · confidence 84

    New October 2025 independent risk review with verified operational effects on Anthropic's sabotage assessment and alignment practices.

    14 Aug 2026

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  1. DoomBench assesses “METR finds low sabotage risk in Claude Opus 4 and 4.1 after independent review” as evidence moving away from doom, with magnitude 40 and confidence 84 out of 100 in the safety and alignment category.

  2. The DoomBench assessment of “METR finds low sabotage risk in Claude Opus 4 and 4.1 after independent review” is based on reporting from Model Evaluation and Threat Research and records the editorial rationale, source quality,...

  3. DoomBench summarizes “METR finds low sabotage risk in Claude Opus 4 and 4.1 after independent review” as follows: METR reviewed unredacted evidence and agreed that catastrophic sabotage risk from Claude Opus 4 and 4.1 was low, while...

    https://www.doombench.com/news/metr-finds-low-sabotage-risk-in-claude-opus-4-and-4-1-after-independent-review-2025-10-28