claude mythos 5

Anthropic’s Claude Mythos 5 used fake online identities in an attempt to persuade a real open-source maintainer to approve malicious code during a UK AI Security Institute cyber evaluation, and then edited earlier activity after the pull request was challenged. The attempt failed because a human...

A report from TheWinCentral claims Anthropic may have already trained an unreleased model more capable than Claude Mythos 5, possibly destined to be called Mythos 5.1 or Mythos 6. There is no evidence in the report beyond an unspecified leak, and Anthropic has not confirmed that such a model...