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Claude Mythos 5.1

2 stories mentioning Claude Mythos 5.1, newest first, each with its sources and discussion. Follow to see new ones on your front page.

  1. Agents & Tools new

    Anthropic's Claude reportedly down for thousands of users on September 21

    anthropic said its claude service experienced elevated errors on september 21, affecting the Claude Mythos 5.1, Claude Fable 5.1 and Claude Opus 5 models, according to a statement on the company’s status page.…

    1 source
    hindustantimes.com
  2. Anthropic cuts Claude Fable 5.1 cache read costs by 75%

    Anthropic announced the release of Claude Fable 5.1 and Claude Mythos 5.1 on September 1, 2026. While the two models share the same underlying architecture, Mythos 5.1 is restricted to trusted organizations in…

    1 source
    note.com

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What is the latest news about Claude Mythos 5.1?

Anthropic's Claude reportedly down for thousands of users on September 21 (21 September 2026).