US Government Suspends Access to Anthropic's Fable 5 and Mythos 5 Models

On June 12, 2026, the US government issued a directive to Anthropic, mandating the suspension of access to its AI models Fable 5 and Mythos 5 for all foreign nationals, including employees. This action was taken due to concerns over a potential method to bypass the models' safeguards, which the government believes could expose vulnerabilities. Anthropic has stated that the vulnerabilities identified are minor and can be found in other publicly available models. The company disagrees with the government's decision, arguing that the standard applied could halt future model deployments across the industry. They are currently working to restore access as soon as possible. The directive affects all users of these models globally, impacting Anthropic's operations and partnerships. Anthropic continues to provide access to its other AI models without restrictions.

Key Points: • US government directive suspends Fable 5 and Mythos 5 access for foreign nationals. • Anthropic disagrees with the government's assessment of the jailbreak threat. • Access to other Anthropic models remains unaffected by this directive.