Well, it sounds like someone in the govt finally got to page 67 and decided that's enough to "stick it to Anthropic"

https://www-cdn.anthropic.com/d00db56fa754a1b115b6dd7cb2e3c3...

That said, Mythos doesn't seem to be exceptionally good but closer to "following the established trend in improvements"

https://www.aisi.gov.uk/blog/our-evaluation-of-claude-mythos...

https://www.aisi.gov.uk/blog/how-fast-is-autonomous-ai-cyber...