BREAKING
US Eases Block on Mythos 5
Two-Week Standoff Timeline
1Jun 9 release
2Jun 12 ban
3Models offline
4Jun 26 partial reversal
Who Gets Access Now
Mythos 5~100 partners
US firms and agencies
No safety classifier
Fable 5restricted
Has safety classifier
Consumer release unresolved
Trigger: "Fix this code."
SWE-Bench Pro Scores
Mythos 580.3
Opus 4.869.2
GPT-5.558.6
Fable 5 Launch Still Unclear
AI NEWS BLITZ
The US has partially reversed its ban on Anthropic's frontier model Mythos 5.