On 12 June 2026, the US government issued a directive to Anthropic under national security export control authorities. The directive required Anthropic to suspend all access to Claude Fable 5 and Claude Mythos 5 by any foreign national, whether located inside or outside the United States, including Anthropic's own foreign national employees. Anthropic received the directive at 5:21 pm ET and disabled both models globally within hours. This is an operative executive directive, not a proposed rule or public consultation.
The directive was issued under US national security export control authorities. Anthropic's public statement did not identify a specific statutory provision, characterising the measure as arising from national security powers to restrict foreign nationals' access to sensitive technologies. Officials told Anthropic the trigger was a technique allowing access to Fable 5's advanced cybersecurity capabilities. That technique bypassed existing model safeguards. Anthropic assessed the jailbreak as narrow and not universal but complied with the directive.
All foreign nationals lost access to Claude Fable 5 and Claude Mythos 5 on 12 June 2026, regardless of their location or whether they are Anthropic employees. US citizens, lawful permanent residents, and other persons protected under US export control terminology retain access. API users, enterprise contract holders, and consumer-facing Claude users who are foreign nationals are all within scope of the suspension. Anthropic confirmed that Claude Opus 4.8 and all previously released models remain available to all users without restriction.
The directive does not specify a sunset date or provide a reinstatement path for affected foreign national users. It is not established whether the suspension will extend to other Anthropic models if additional jailbreak techniques are identified against those systems. No public regulatory guidance has yet formalised the legal basis for issuing model-level access restrictions through export control authorities, leaving the boundaries of that authority undefined for the broader AI industry.
Licentium advises technology companies, AI developers, and enterprises on export control compliance as applied to AI systems and software. If your organisation is affected by restrictions on AI model access or requires analysis of compliance obligations arising from AI export control directives, our team and partner network are available to assist. Work we undertake includes AI export control compliance, technology sanctions analysis, regulatory risk assessment for AI deployers, and cross-border AI deployment structuring.