Just three days after the launch of Fable 5, a nerfed version of the much-feared Mythos, Anthropic was forced to take it offline. In a blog post published Friday, the company said it had been ordered by officials in the Trump administration to halt access to Fable—and another, less widely available model called Mythos 5—for all foreign nationals both in and outside the United States, including the company’s own employees. To comply, Anthropic said it had to deactivate access to the models for all users. Federal officials issued the order in response to information indicating that the company’s models could be prompted to bypass certain security guardrails, according to the post, thereby posing what the administration deemed to be a national security risk. However, the company added that the supposed vulnerabilities “all appear relatively simple, and we have found that other publicly-available models are able to discover them as well without requiring a bypass.” The post also reiterated the fact that Fable had been deployed with safety guardrails so robust and sensitive that they’d become a source of aggravation for some users. Later reporting from The Information revealed that the Trump administration’s decision was motivated at least in part by earlier conversations between Amazon CEO Andy Jassy and government officials, including Treasury Secretary Scott Bessent. Jassy reportedly told the officials that internal researchers at Amazon had been able to prompt Fable to generate sensitive information that could be used by hackers to bypass the company’s cybersecurity systems, prompting a meeting between the officials. The directive to Anthropic to restrict foreigners from accessing the models was signed off by President Trump.