Commentary: Why the US government shut down Anthropic’s latest Claude AI model (opens original article in a new tab)

The US government halted access to Anthropic's latest Claude AI models, Fable 5 and Mythos 5, under an export control directive, citing concerns over potential misuse after a jailbreak was discovered. The move follows ongoing tensions between Anthropic and the Trump administration over AI regulation and model usage.

• US government shut down Anthropic's Claude AI models Fable 5 and Mythos 5 due to export control directive restricting use to US nationals.
• Anthropic and Trump administration have been in conflict since 2025 over AI regulation, with the government accusing the company of 'woke AI' and restricting model usage for surveillance and weapons.
• A jailbreak bypassing Fable's safeguards was discovered, raising concerns about potential misuse for cyberattacks, with research behind the directive possibly linked to Amazon.