Screenshot leaks mysterious Claude 'Mythos 5.5' model pitched for cybersecurity and biology
scaling01 · x · 2026-11-01
Account scaling01 shared a screenshot of what appears to be a Claude interface showing a model named "Claude Claude Mythos 5.5" with the tagline "Our most capable model class for cybersecurity and biology research." Anthropic has not confirmed anything, and the doubled "Claude Claude" wordmark makes the screenshot itself suspicious — treat as an unverified rumor.
Related event: Anthropic website source code leaks unreleased Claude Mythos 5.5(9 posts)→
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