Anthropic has disabled access to its most powerful AI models, Fable 5 and Mythos 5, following a directive from the US government. The order specifically targets foreign nationals, preventing their use of these advanced technologies. The US government cited unspecified national security concerns as the reason for the restriction. Anthropic confirmed the action in a statement released Friday, complying with the government’s request. The move impacts the availability of these cutting-edge AI tools to international users. Details regarding the specific security risks prompting the ban have not been publicly disclosed. This decision highlights growing scrutiny of AI technology and its potential implications for national security.