Anthropic has taken its Fable 5 and Mythos 5 artificial intelligence models offline to comply with a Trump administration directive prohibiting use by foreign nationals. The company stated it disagrees with the government’s handling of the directive, citing a lack of transparency and specific national security justifications.
Why did the US government restrict Anthropic’s AI models?
The Trump administration issued a directive to restrict foreign access to Anthropic’s latest AI technology, according to a statement from the company. Anthropic reported receiving this order on a Friday afternoon, but noted that the government did not specify the particular national security concerns driving the decision.
The Commerce Department did not immediately respond to requests for comment regarding the specific risks associated with Fable 5 and Mythos 5. This sudden restriction comes immediately after Anthropic released Fable 5 to a wide audience earlier this week.
Anthropic had already implemented tight access controls on the Mythos 5 model due to existing cybersecurity fears before this government directive was issued.
How does this directive differ from the recent AI executive order?
This enforcement action represents a shift in how the federal government manages advanced AI. Ten days ago, President Donald Trump signed an executive order intended to create a framework for vetting the national security risks of advanced AI systems. That order allowed for a one-month vetting period before public release.
A key distinction exists between the two measures. The executive order described participation by AI developers as voluntary. In contrast, the current directive has forced Anthropic to take its models offline immediately to ensure compliance with export controls.
| Feature | Recent Executive Order | Current Directive |
|---|---|---|
| Participation | Voluntary | Mandatory Compliance |
| Primary Goal | Risk Vetting Framework | Export Control/Access Restriction |
What happens next for Anthropic and its users?
Anthropic described the current situation as a “misunderstanding” and stated it hopes to restore access to its models as soon as possible. The company maintains that any government ability to block unsafe deployments should be part of a statutory process that is “transparent, fair, clear, and grounded in technical facts.”
The company argued that the current action fails to meet those principles. For users and developers, the offline status of Fable 5 and Mythos 5 creates immediate uncertainty regarding the availability of high-level reasoning models in international markets.
Watch for upcoming Commerce Department rulings. The tension between voluntary vetting frameworks and mandatory export controls will likely define the next phase of AI regulation.
Frequently Asked Questions
Which Anthropic models are affected by the directive?
The directive specifically targets the Fable 5 and Mythos 5 artificial intelligence models.
What is Anthropic’s official stance on the government’s move?
Anthropic disagrees with the government’s handling of the matter, stating the directive lacks transparency and fails to provide specific national security justifications.
Is this part of the recent AI executive order?
While the directive follows the recent executive order, the order focused on a voluntary vetting framework, whereas this directive has resulted in mandatory restrictions on model access.
When will the models be back online?
Anthropic has not provided a specific timeline but stated it hopes to restore access “as soon as possible.”
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