Anthropic has taken down its newly released Claude Fable 5 and Mythos 5 AI models following a US government directive citing national security concerns. The government claims to have identified a jailbreak technique that involves asking the model to read a codebase and identify software vulnerabilities. Anthropic disputes the severity, noting the jailbreak is narrow and that other publicly available models can achieve similar results without bypassing safeguards. Access has been suspended for all users, not just foreign nationals as the directive specified. This incident is part of an ongoing conflict between Anthropic and the Trump administration, which previously designated Anthropic a 'supply chain risk' after the company limited US military access to its technology.
