kapynPolicy & Regulation

Statement on the US government directive to suspend access to Fable 5 and Mythos 5

Anthropic is suspending access to Fable 5 and Mythos 5 models globally due to a US government directive citing national security concerns. The directive stems from a reported method of bypassing these models, which the government believes could pose a security risk. Access to other Anthropic models remains unaffected.

Simon Willison·Jun 13, 2026

Opening Kapyn…