Trump Admin allows Anthropic Mythos 5 for 100+ US orgs

The Trump administration has cleared Anthropic’s Claude Mythos 5 for use by more than 100 specific U.S. government agencies and companies, and it is permitting non‑American employees at those organizations to access the model. Commerce Secretary Howard Lutnick wrote to Anthropic chief compute officer Tom Brown, saying "I have determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model."

What exactly did the administration authorize?

The administration authorized the redeployment of Claude Mythos 5 to a set of more than 100 U.S. agencies and companies, including access for non‑American employees at those organizations and Anthropic’s non‑American employees. The decision was communicated in a letter from Commerce Secretary Howard Lutnick to Anthropic’s Tom Brown and was described in a company post on X as allowing Mythos 5 "to be redeployed to a set of US organizations that operate and defend critical infrastructure."

The article says the directive specifically covers Mythos 5; it does not address the release of Fable 5 in the same letter. Anthropic’s public post stated the company is restoring access for those organizations quickly and continuing to work with the government to expand access and to make Fable 5 available for general use again.

Why were Mythos 5 and Fable 5 pulled from the market?

Anthropic pulled Mythos 5 and Fable 5 after a ban prompted the company to remove both models, following reports that their guardrails were bypassed easily by security researchers. The company noted it had been working with the U.S. government since June 12 to restore access. TechCrunch says Fable 5 had been widely released a couple of days before the ban because it was said to have more protections, but both models were subsequently taken off the market.

That sequence left a brief period when both models were unavailable: Fable 5 was distributed widely shortly before the ban, then both Mythos 5 and Fable 5 were pulled, and now Mythos 5 is being redeployed to a limited set of trusted organizations while Fable 5’s general availability remains unresolved in the government directive.

Why it matters

A targeted clearance for Mythos 5 changes the risk calculus for organizations that defend critical infrastructure, because it restores access to what Anthropic called its "strongest cybersecurity model." Allowing non‑American employees at those approved organizations to use the model widens the operational footprint beyond U.S. nationals, which alters how companies will plan staffing and incident response. The selective redeployment also signals the administration is willing to permit limited, controlled use rather than keeping the models offline indefinitely.

What to watch

Look for two signals that will shape the next phase: whether the government expands the approved list beyond the current 100+ entities, and whether the directive is updated to address Fable 5 so it can return to general availability. Anthropic says it is continuing to work with the government to expand access to Mythos 5 and to make Fable 5 available again.

Sources cited in the article include a letter from Commerce Secretary Howard Lutnick to Tom Brown and Anthropic’s public post on X, which said, "Since June 12, we’ve been working closely with the US government to restore access to Claude Mythos 5 and Fable 5." The TechCrunch piece was published June 26, 2026.