# Anthropic cuts access to AI models over US 'national security' order > Source: > Published: 2026-06-14 01:27:03+00:00 SAN FRANCISCO — Anthropic said Friday it has suspended access to two powerful AI models, Fable 5 and Mythos 5, to comply with a U.S. national security order. Just three days after publicly launching Fable 5, the company said in a blog post that it received a government directive banning all foreign nationals, even ones who work at Anthropic, from accessing Fable 5 and Mythos 5 over national security concerns. "The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance," it said. The company said it received the letter at 5:21 pm (2121 GMT) Friday. Axios reported that the letter came from U.S. Commerce Secretary Howard Lutnick. The U.S. Commerce officials did not immediately respond to a request from AFP. The firm said that the letter did not state what specifically concerned the government. However, the firm's "understanding is that the government believes it has become aware of a method of bypassing, or 'jailbreaking'" the Fable 5 model such that it could aid hacking. Fable 5, released Tuesday, is a locked-down version of