Anthropic Halts Access to Fable 5 and Mythos 5 Amid U.S. Government Directive Anthropic announced on Friday that it has disabled access to its Fable 5 and Mythos 5 artificial intelligence models to comply with a U.S. government directive citing "national security authorities." The company stated it received the order at 5:21 p.m. ET, instructing it to suspend all access to the models "by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees." The abrupt decision affected all customers, though the company emphasized that its other models remain unaffected. The move follows the recent release of Fable 5 and Mythos 5, two advanced AI models that Anthropic had positioned as state-of-the-art across multiple industry benchmarks. Fable 5, in particular, marked the first time the company publicly released such a sophisticated offering, thanks to new safeguards designed to block responses in high-risk areas. The models were built on the foundation of the Claude Mythos Preview, which garnered attention in April for its cybersecurity capabilities. However, Anthropic stated it did not plan to make the model generally available, instead limiting its rollout to a select group of companies through a cybersecurity initiative called Project Glasswing. In its statement, Anthropic noted the government did not provide specific details about its national security concerns. The company apologized to customers for the disruption, reiterating its belief that the government should have the ability to block unsafe deployments through a transparent, fair, and technically grounded process. "This action does not adhere to those principles," the company said, highlighting its frustration with the lack of clarity in the directive.#anthropic #department_of_defense #project_glasswing #mythos_5 #fable_5
