The Hallway Track
Governance & Policy

"They screwed us": Personality clashes sent Anthropic's models offline

Simon Willison · Jun 15, 2026 · Governance & Policy

Personality clashes and a jailbreak prompted the US government to suspend access to Anthropic's Mythos/Fable models.

“everyone feels safe, secure and happy.”

An Axios report details behind-the-scenes friction between Anthropic and the US government over export-control-driven suspension of access to its Mythos/Fable models, tied to jailbreak concerns. Anthropic representatives are meeting with the Commerce Department, and Anthropic maintains no universal jailbreak has been found against Claude Mythos. It matters because it shows government policy and personality dynamics directly affecting frontier model availability.

anthropic export-controls jailbreaking us-government claude-mythos

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