AI Customer Sues U.S. Government Over Sudden Loss of Anthropic’s Fable 5 Model

A legal technology startup, Legion LegalTech Corp, has filed a lawsuit against the federal government in Washington, D.C., following the abrupt loss of access to Anthropic's flagship AI model, Claude Fable 5. The government's directive, issued by the Commerce Department on June 12, required Anthropic to block foreign nationals from using the model and its base model, Mythos 5. In response, Anthropic disabled both models for all customers worldwide, a decision that came just days after the models' public debut. The government cited national security concerns, specifically referencing a paper by Amazon security researchers describing a potential guardrail bypass, though Anthropic reviewed the demonstration and found only minor vulnerabilities. Legion, which relies on Fable 5 for its AI-powered legal software, argues that the loss of access caused immediate, irreparable, and existential harm to its operations. The lawsuit challenges the directive on multiple fronts, including whether export control laws cover hosted AI models, whether the order exceeds statutory geographic limits, and First Amendment concerns regarding the restriction of information. Legal observers note the directive's unusual breadth, which applied to foreign nationals inside the United States and even some Anthropic employees. The case highlights the tensions between national security demands and the commercial realities of the artificial intelligence industry, as well as the potential precedent of the government forcing a leading AI lab to yank its most capable model without detailed public justification.

(Source：Webpronews)