Commerce Department lifts Fable 5 export controls, ending 18-day blackout

After an emergency June 12 order pulled Anthropic's flagship model offline worldwide, the Trump administration reversed course June 30 — in exchange for a new 99%-accuracy jailbreak classifier, pre-release government coordination, and a public HackerOne bounty program.

The Commerce Department lifted its emergency export controls on Claude Fable 5 on June 30, ending an 18-day worldwide blackout of Anthropic’s flagship model in exchange for a jailbreak classifier the company says blocks the flagged technique in more than 99% of attempts, plus pre-release government coordination and a public HackerOne bounty program.

The sequence itself is the story. Anthropic launched Fable 5 and Mythos 5 on June 9. Three days later, after Amazon researchers surfaced a jailbreak that reportedly generalized across Claude Opus 4.8, OpenAI’s GPT-5.5, and Kimi K2.7, Commerce invoked the voluntary frontier-model review path created by the June 2 executive order and barred foreign nationals from either model. On June 26, roughly 100 U.S. organizations defending critical infrastructure got Mythos 5 back through Project Glasswing. Four days after that, Fable 5 cleared review.

Commerce Secretary Howard Lutnick, announcing the reversal on X, said his department “worked closely with Anthropic to analyze and approve Fable 5 to ensure alignment across the US Government.” Read that phrase twice. “Alignment across the US Government” is doing considerable work, especially given that Anthropic sued the Department of Defense in March after the Pentagon labeled it a “supply chain risk.” The company that was a supply-chain liability in the spring is a coordination partner by summer.

Public access resumes Wednesday across Claude.ai, the Claude Platform, Claude Code, and Claude Cowork, with Fable 5 included for up to 50% of weekly usage limits on Pro, Max, Team, and select enterprise plans through July 7. The model also returns to Amazon Web Services, Google Cloud, and Microsoft Foundry.

What crystallized in these 18 days is a template. A “voluntary” review path, invoked under emergency authority within 72 hours of launch, produces a de facto pre-clearance regime, complete with classifier benchmarks and bug-bounty commitments as conditions of restoration. Neither CEO Dario Amodei nor co-founder Tom Brown has to concede the point publicly. The next frontier release will simply arrive already coordinated. That’s the equilibrium now.

Commerce Department lifts Fable 5 export controls, ending 18-day blackout

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