Anthropic cuts off Fable 5 and Mythos 5 access following government order
The US government issued an export control directive on Friday evening ordering Anthropic to block access to its Fable 5 and Mythos 5 models for all foreign nationals, inside and outside the US, citing national security concerns. To comply, Anthropic completely cut off access to the models for all customers, including its own employees. Anthropic said it complied but stated the government did not provide specific details of the concern, gave any jailbreak evidence only verbally, and described the disclosed vulnerabilities as minor and available through other models such as GPT 5.5.
Key Takeaways
- The US demanded foreign nations be blocked over national security concerns.
The US government issued an export control directive citing national security concerns requiring Anthropic to block access to Fable 5 and Mythos 5 for foreign nationals.
- An export control directive citing national security concerns required blocking access for all foreign nationals.
by Terrence O'Brien Jun 13, 2026, 12:55 PM UTC Link Share Gift Image: Cath Virginia / The Verge Terrence O'Brien is the Verge's weekend editor.
- On Friday evening, the government ordered Anthropic to block access to Fable 5 and Mythos 5 for all foreign nations, both inside and outside the US, due to national security concerns.
- In a statement , Anthropic said that while it was complying with the order, the government "did not provide specific details of its national security concern."
Instead, it claims that any evidence of potential jailbreak was provided verbally, and that the vulnerabilities discovered were minor and available via other models, including GPT 5.5.
- The potential jailbreaks that have been disclosed to us are either entirely benign responses or are minor findings that provide no Mythos-specific uplift.
The US demanded foreign nations be blocked over national security concerns. The US government issued an export control directive citing national security concerns requiring Anthropic to block access to Fable 5 and Mythos 5 for foreign nationals. AI News Policy Anthropic cuts off Fable 5 and Mythos 5 access following government order An export control directive citing national security concerns required blocking access for all foreign nationals.
An export control directive citing national security concerns required blocking access for all foreign nationals. by Terrence O'Brien Jun 13, 2026, 12:55 PM UTC Link Share Gift Image: Cath Virginia / The Verge Terrence O'Brien is the Verge's weekend editor. He has over 18 years of experience, including 10 years as managing editor at Engadget.
On Friday evening, the government ordered Anthropic to block access to Fable 5 and Mythos 5 for all foreign nations, both inside and outside the US, due to national security concerns. That order included employees of Anthropic. To meet those demands, the company has completely cut off access to the models for all customers.
For more details please read the original article at The Verge AI.
Continue Learning
Comments
Comments appear only after moderation. Your email identifies your submission to the moderator and is never displayed here.
No approved comments yet.