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US Orders Anthropic to Disable Advanced AI Models Globally
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US Orders Anthropic to Disable Advanced AI Models Globally

WireByte Staff · June 13, 2026

Anthropic disabled its advanced AI models, Fable 5 and Mythos 5, worldwide following a US government order to restrict foreign national access due to national security concerns. The company cited inability to selectively comply, leading to a complete shutdown for all users, with Anthropic stating specific threats were not detailed.

Key points

  • US government ordered Anthropic to suspend all access to its Fable 5 and Mythos 5 AI models by foreign nationals.
  • Anthropic disabled both models globally for all users, citing the impossibility of selectively blocking foreign nationals.
  • The directive cited national security concerns, though Anthropic stated no specific details were provided.
  • The US government reportedly believes a vulnerability could be exploited to identify software flaws.
  • This action represents an escalation of US efforts to control AI capabilities for adversaries.

AI firm Anthropic has disabled its most advanced models, Claude Fable 5 and Claude Mythos 5, for all users worldwide after receiving an export control directive from the US government. The order, issued on Friday evening, mandated the suspension of access for any foreign national, including Anthropic's own employees, citing national security concerns.

Anthropic stated that it was impossible to selectively block foreign nationals without disabling the models entirely. The company also noted that the government did not provide specific details regarding the national security concerns, only verbal evidence of a potential "jailbreak" vulnerability. Anthropic claims the reported vulnerabilities were minor and could be exploited in other AI models.

This move by the US government marks a significant step in controlling the proliferation of advanced AI technology. Previously, US export controls focused on hardware like chips, rather than restricting access to AI models themselves. The directive aims to prevent foreign adversaries from acquiring or developing advanced AI capabilities.

Sources

WireByte Staff — Editorial Team

The WireByte editorial team synthesises technology news from multiple primary sources, verifies the facts, and links every source. Articles are produced with AI assistance and reviewed under our editorial policy.