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The latest o1 news, : Anthropic Claude Opus 5.5 rejects disabled thinking, causing 400 errors.

2 stories mentioning o1 since 14 October 2026, newest first, each with its sources and discussion. Follow to see new ones on your front page.

  1. Generative AI & Models new

    Anthropic Claude Opus 5.5 rejects disabled thinking, causing 400 errors

    Anthropic has released Claude Opus 5.5, Fable 5.1, and Sonnet 5.5, introducing breaking changes to the API that may disrupt existing automation. The most significant change is that Claude Opus 5.5 no longer accepts…

    1 source
    note.com
  2. Research new

    MIT study finds AI solved 35% of theory problems by mid-2026

    A new study from MIT’s Neil Thompson and collaborators shows AI models now solve about 35% of theoretical problems in probability, statistics, economics, physics, and cosmology—up from 2% in mid-2024. The research…

    4 sources
    cryptobriefing.comnote.combostonglobe.comWired AI

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As of 23 October 2026: Anthropic Claude Opus 5.5 rejects disabled thinking, causing 400 errors. Anthropic has released Claude Opus 5.5, Fable 5.1, and Sonnet 5.5, introducing breaking changes to the API that may disrupt existing automation.

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