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
Anthropic Suspends New AI Tools Amid US Security Concerns Anthropic has temporarily halted the use of its latest AI models, Claude Fable 5 and Mythos 5, following concerns raised by US national security authorities. The company announced the suspension on its website, stating that it had been ordered to restrict foreign nationals from accessing these tools. In a statement, Anthropic described the decision as necessary to comply with the directive, emphasizing that the move was prompted by the government’s belief that the models could be bypassed through a process known as "jailbreaking." This technique allows users to circumvent software restrictions, potentially exposing sensitive data or unlocking features not intended for public access. The company clarified that US authorities had not specified particular vulnerabilities but indicated that a method had been demonstrated to exploit the models. Anthropic acknowledged that the identified issues were relatively simple and noted that other publicly available AI systems could also uncover these weaknesses without requiring bypass techniques. Despite this, the company maintained that its models were "too powerful" to release publicly, a claim that some critics have dismissed as marketing hyperbole. Anthropic had previously highlighted various safeguards to prevent cyberattacks, but concerns from finance, technology, and government leaders persisted, particularly after a private release in April for testing and vulnerability assessments. The suspension comes amid an ongoing legal dispute between Anthropic and the Trump administration. The company is challenging a directive from the Pentagon that labeled it a "supply chain risk," a designation typically reserved for entities based in adversarial nations.#us #pentagon #anthropic #claire_fable_5 #mythos_5
