Anthropic remains in a two-week standoff with the White House after keeping Mythos 5 and Fable 5 offline since the Jun. 12 order, which blocks access by any foreign national, including non-U.S. employees. The Trump administration ordered the suspension citing security concerns tied to the systems’ advanced capabilities, covering non-U.S. citizens inside and outside the country. Anthropic sent executives to Washington after the order but has declined comment, saying there was no update. The impasse appears tied to the lack of a settled export-control process for AI systems. A person familiar with the talks told The Verge that the Commerce Department tested Fable 5 before release and raised no objections, before a later report about a guardrail bypass changed the timeline. Katie Moussouris, founder and CEO of Luta Security, reviewed the reported Fable 5 issue at Anthropic’s request and argued the vulnerability had been overstated, calling the work normal defensive security. The delay has raised stakes for Anthropic’s business, as Mythos-class models were expected to support revenue before a possible IPO and help pay for compute commitments, including a reported SpaceX data center deal. Other U.S. AI companies, including OpenAI, Google and Microsoft, could face similar controls as their models approach Mythos-level capabilities. The dispute follows months in which Washington sought to reduce AI regulation, making the order a sharp reversal and a potential template for future frontier-model restrictions.