Anthropic to disable its most advanced AI models after US order limiting foreign access

2026-06-13 · Source: AI (artificial intelligence) | The Guardian · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Cybersecurity & Data Privacy · Depth: Fundamental Awareness, short

Summary

The US government has ordered Anthropic to suspend foreign national access to its most advanced AI models, Fable 5 and Mythos 5, citing national security concerns. Anthropic, which recently filed for a US IPO, stated it must "abruptly disable" these models for all users to comply with the export control directive. The company understands the government believes a "jailbreaking" method could bypass safeguards, allowing Fable 5 to identify software vulnerabilities. Anthropic disagrees, calling the evidence "narrow, non-universal" and questioning the regulatory approach, especially after advocating for greater AI oversight. This action marks a significant escalation in US efforts to restrict foreign adversaries' AI capabilities, shifting focus from chips to direct AI access.

Key takeaway

For AI developers and legal teams navigating international markets, this directive signals a critical shift in US export control policy, now directly targeting advanced AI model access. You should proactively assess your models for potential "jailbreaking" vulnerabilities and understand the evolving regulatory landscape, particularly regarding national security implications. This incident underscores the need for robust internal compliance frameworks and clear communication channels with government bodies to mitigate abrupt operational disruptions.

Key insights

US export controls are expanding to directly restrict foreign access to advanced AI models, not just hardware.

Principles

• AI model "jailbreaks" pose significant national security risks.
• Government export controls can abruptly halt commercial AI deployments.
• AI developers and regulators have tension over risk assessment.

Topics

• Anthropic
• Fable 5
• Mythos 5
• Export Controls
• National Security
• AI Regulation
• Software Vulnerabilities

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Related on AIssential

• Anthropic cuts off Fable 5 and Mythos 5 access following government order — The government ordered Anthropic to block AI model access due to unspecified national security concerns, despite Anthropic's claims of minor vulnerabilities.
• Anthropic Suspends Customers’ Access to Latest Models After Government Order — Government orders can immediately restrict access to advanced AI models due to national security concerns.
• US government forces Anthropic to disable Claude Fable 5 and Mythos 5 for all customers worldwide — Government-mandated global disabling of Anthropic's Fable 5 and Mythos 5 due to a suspected jailbreak sets a contentious industry precedent.
• Anthropic’s safety warnings may have just backfired — the government has pulled the plug on its most powerful AI — Government intervention in AI model deployment, spurred by developer safety warnings, highlights complex regulatory and commercial tensions.
• US limits use of Anthropic AI models Fable 5 and Mythos — Government AI safety concerns are escalating, leading to direct restrictions on frontier model access and development.
• Anthropic shuts down Fable, Mythos models following Trump admin directive — US government directive forced Anthropic to shut down new AI models due to a reported jailbreak, highlighting rapid regulatory intervention in frontier AI.

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Editorial summary, takeaway, and curation by AIssential. Original article published by AI (artificial intelligence) | The Guardian.