Trump Admin releases Anthropic Mythos to be used by more than 100 US companies, agencies

Two weeks after the ban that caused Anthropic to pull its powerful cybersecurity-oriented models, Mythos 5 and Fable 5, the Trump administration is softening its stance.

It now allows Anthropic to make Mythos 5 available to more than 100 specific US government agencies and companies, including allowing non-US employees at those organizations to access the model, both Semafor And Reuters report. This list also includes Anthropic’s own non-US employees, who were included in the original ban that prohibited non-Americans from accessing the models.

“I have determined that appropriate safeguards are in place to allow certain trusted partners access to the Claude Mythos 5 model,” Commerce Secretary Howard Lutnick wrote to Anthropic’s chief compute officer Tom Brown on Friday, according to the notice seen by Semafor.

Apparently the government did not address the release of Fable 5 in this directive. This is a version of Mythos 5 that was widely released a few days before the ban, as it was said to have more protection. Both models were withdrawn after those guardrails were reportedly easily bypassed by security researchers. Anthropic did not immediately respond to our request for comment.

Anthropic publicly acknowledged the progress on Friday in a message on Xwrites: “Since June 12, we have been working closely with the U.S. government to restore access to Claude Mythos 5 and Fable 5. Today, the government informed us that Mythos 5, our strongest cybersecurity model, can be deployed to a range of U.S. organizations that manage and defend critical infrastructure. We are quickly restoring access to these organizations and we continue to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again.”