White House Readied Export Controls Against Claude Mythos Weeks Before Fable 5 Release

The Washington Post reports the White House had an export-control directive prepared to crack down on Anthropic’s Claude Mythos well before Claude Fable 5 went offline, after Anthropic expanded Project Glasswing access to about 111 entities (with roughly 50 already granted) including a South Korean telecom linked to China. An Amazon tip from Andy Jassy about jailbreak capabilities appears to have pushed policymakers toward action, and Anthropic later revoked access to the sensitive organization, contributing to Fable 5’s shutdown and underscoring a tense clash between frontier AI access and export controls.