US blocks Anthropic AI models: Government orders suspension of Fable 5 and Mythos 5 over national security concerns
The Trump administration has ordered Anthropic, the leading AI company behind Claude, to cut off foreign access to its most advanced AI models, Fable 5 and Mythos 5, citing national security concerns. The directive, issued by the Department of Commerce under export control laws, requires Anthropic to block all foreign nationals, including its own foreign employees, from using these models. Unable to filter users by nationality, Anthropic disabled both models for all customers just three days after their commercial launch.
The order stems from the government's discovery of a potential 'jailbreak' method to bypass safety restrictions on Fable 5, which could allow the model to be used for hacking or other malicious purposes. Anthropic has disputed the severity of the threat, stating that the identified vulnerabilities are minor and can also be exploited by other publicly available models. The company expressed willingness to discuss the concerns but criticized the lack of transparency and due process in the government's action.
This incident is the latest escalation in a long-standing feud between Anthropic and the Trump administration. Earlier this year, the Pentagon labeled Anthropic a 'supply chain risk,' effectively barring its use by federal agencies. Anthropic has filed lawsuits in response. The suspension has alarmed international observers, particularly in France, who see it as a dangerous precedent for state intervention in AI development.
Key Facts
The Trump administration ordered Anthropic to block foreign national access to Fable 5 and Mythos 5 under export control laws.
Anthropic disabled both models for all customers after receiving the directive on June 12, 2026.
The government cited a jailbreak method that could bypass safety restrictions, but Anthropic argues the risk is minimal and not unique to its models.
The order applies to all foreign nationals, including Anthropic employees from allied countries like Canada and the UK.
This action is the latest in a series of conflicts between Anthropic and the administration, including the Pentagon labeling Anthropic a supply chain risk.
Source Coverage
The AgeCriticalCentre-Left
Political feud and Trump administration's escalating conflict with Anthropic
Focuses on the personal and political tensions between Trump officials and Anthropic CEO Dario Amodei, citing Defense Secretary Hegseth and former AI czar David Sacks. Highlights the unusual nature of the directive and questions its validity.
L'ObsConcernedLeft
International concern, especially in France, over unprecedented government intervention
Frames the story as alarming for global AI development, posing five key questions about the injunction. Highlights the lack of precedent and potential impact on allies like France.
ClarÃn ArgentinaNeutralCentre-Right
Impact on foreign employees and allies, unusual breadth of restrictions
Focuses on the unusually broad nature of the order, noting it affects even employees from allied nations. Discusses the potential disruption to Anthropic's operations and the global implications.
Il Sole 24 OreNeutralCentre-Right
Business and regulatory perspective, with focus on export controls and IPO implications
Emphasizes the business impact on Anthropic, which recently filed for IPO. Covers the export control rationale and the company's lawsuit against the administration.
El DiarioNeutralLeft
Technical and regulatory details of the suspension
Provides a straightforward account of the order, emphasizing that Anthropic had previously controlled Mythos access through Project Glasswing. Notes the company's complaint about lack of transparency and due process.
WiredNeutralCentre-Left
Technical specifics of the jailbreak dispute and Anthropic's rebuttal
Provides a detailed account from Anthropic's blog post, describing the government's jailbreak claim and the company's counterargument that the vulnerabilities are minor and not unique. Highlights the supply chain risk designation and lawsuits.
Conclusion
The suspension of Anthropic's most advanced AI models marks an unprecedented government intervention in the AI industry, highlighting tensions between national security imperatives and corporate autonomy. While the administration frames the action as a necessary safeguard, critics point to the lack of clear evidence and due process. The episode underscores the growing regulatory scrutiny of frontier AI and may shape future debates on export controls, AI safety, and the balance between innovation and security.
Logical analysis
What sources agree on
All outlets agree the US government issued an export control directive ordering Anthropic to block foreign access to Fable 5 and Mythos 5.
All note that Anthropic complied by disabling both models for all customers.
All report that the action is unprecedented and escalates existing tensions between Anthropic and the Trump administration.
Justification for the order: whether the jailbreak posed a credible national security threat.
Outlet
Claim
The Age
Anthropic says the jailbreak method is overblown and only finds minor, known vulnerabilities that other models can also find.
Wired
Anthropic states the government only provided verbal evidence of a narrow jailbreak that essentially asks the model to fix simple flaws.
L'Obs
The government believes a credible partner demonstrated a bypass of safety guards, but details remain vague.
Whether Anthropic refused to cooperate before the order.
Outlet
Claim
The Age
David Sacks said CEO Dario Amodei refused to fix the jailbreak; a person briefed disputes this, saying Anthropic was happy to discuss.
El Diario
Anthropic says it believes the government should have such powers but the action was not transparent; no mention of refusal.
Most outlets do not mention the specific 'trusted partner' that alerted the government (only The Age briefly references it).
The exact timeline of the jailbreak discovery and whether it was independently verified is not explored in depth by most sources.
The story reveals a major flashpoint in AI governance. The government's reliance on a jailbreak claim without public technical evidence raises due process concerns, as Anthropic argues. The broad scope of the order, affecting even allied nationals, suggests a hardening of US technology policy. However, the lack of transparency from both sides makes it difficult to assess the true risk. This incident is likely to accelerate debates on export controls for frontier AI and could influence regulatory frameworks globally.