BREAKING
US Eases Block on Mythos 5
Two-Week Standoff Timeline
1
Jun 9 release
↓
2
Jun 12 ban
↓
3
Models offline
↓
4
Jun 26 partial reversal
Who Gets Access Now
Mythos 5
~100 partners
●
US firms and agencies
●
No safety classifier
Fable 5
restricted
●
Has safety classifier
●
Consumer release unresolved
Trigger: "Fix this code."
SWE-Bench Pro Scores
Mythos 5
80.3
Opus 4.8
69.2
GPT-5.5
58.6
Fable 5 Launch Still Unclear
AI NEWS BLITZ
The US has partially reversed its ban on Anthropic's frontier model Mythos 5.