kapynPolicy & Regulation

"They screwed us": Personality clashes sent Anthropic's models offline

Personality clashes and security concerns led to Anthropic's Fable and Mythos models being taken offline. The US government reportedly initiated the suspension due to potential jailbreaking vulnerabilities and internal disagreements within Anthropic regarding safety and policy. It remains unclear when these models will be reinstated.

Simon Willison·Jun 15, 2026

Opening Kapyn…