Overview
- The Commerce Department on Friday issued an export‑control directive limiting access to Anthropic’s Fable 5 and Mythos 5 to U.S. nationals, and Anthropic shut both models for all customers because it could not reliably block users by nationality.
- Reports from multiple outlets say Amazon and other researchers told officials they had found a way to “jailbreak” Fable 5 so it could answer certain cybersecurity queries; the government cited that reported bypass as the national security justification.
- Anthropic says the demonstrated technique was narrow, exposed only a few known, minor software flaws, and that other public models can find similar issues; the company says it has received only verbal descriptions of the government’s evidence.
- Senior Anthropic technical staff met with White House and Commerce officials this week to try to resolve the directive, and industry cybersecurity leaders have urged lifting the restriction and creating a transparent, technical review process.
- The episode deepens an ongoing rift between Anthropic and U.S. agencies — the Pentagon earlier labeled the firm a supply‑chain risk — and raises practical tradeoffs by removing advanced tools defenders use while prompting calls for clear rules on frontier cloud AI.