Leak: Mythos 5.5 spotted in Anthropic's website source code, release imminent
kimmonismus · x · 2026-11-02
Mythos 5.5 has been spotted in the HTML source code of Anthropic's official website. The mention is absent from the October 23 snapshot, suggesting it was added within the last few days — a strong sign the release is imminent. The tip came via an anonymous email and was confirmed by kimmonismus.
Related event: Anthropic Site Code Leaks Claude Mythos 5.5, With Fable 5.5 Also Surfacing(11 posts)→
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