The Trump administration is expected on Tuesday night to lift export controls on Anthropic’s two most powerful AI models after the company reached a deal with the Commerce Department, according to a person familiar with the matter.

The department will lift restrictions on both the Fable 5 model and the more powerful Mythos 5 model, which has so far been approved for release only to select companies and government agencies, the person said.

The move is expected to be communicated in a letter to Anthropic cofounder Tom Brown sent by Commerce Secretary Howard Lutnick, who has led the Trump administration’s efforts to resolve the dispute with Anthropic alongside the national cyber director Sean Cairncross.

The developments come as Anthropic has been working with the Commerce Department and the White House, the people say, to strengthen safeguards against users bypassing Fable’s safety restrictions to access restricted capabilities, especially those related to cybersecurity.

Anthropic originally contended that the administration’s jailbreak concerns were overblown. The company said it was impossible to ensure there were zero jailbreaks that could unlock the more powerful capabilities of the company’s restricted Mythos model, which was approved for limited release to select companies and government agencies last week.

In recent weeks, Anthropic changed tack to try to get Fable back online, which has also meant changing the company’s communication style with the administration. WIRED previously reported that Anthropic CEO Dario Amodei was recently replaced in meetings with cofounder Tom Brown, who officials liked more on a personal level.

Anthropic also assured the administration that it would try to reduce the number of jailbreaks by building more robust safeguards, effectively telling the administration what it wanted to hear rather than relitigating the conceptual issue of whether jailbreaks can be stopped, the people said.