Anthropic’s safety warnings may have just backfired — the government has pulled the plug on its most powerful AI
techcrunch.com Jun 13, 2026

Anthropic’s safety warnings may have just backfired — the government has pulled the plug on its most powerful AI

AI-summarised brief · reviewed before publication

The U.S. government ordered Anthropic to shut off access to its AI models Claude Fable 5 and Claude Mythos 5, citing national security concerns. Anthropic complied, but disagrees with the decision, arguing that its safeguards are sufficient. The directive affects all users worldwide, not just foreign nationals. Mythos is Anthropic's most capable AI model, which was restricted due to its ability to find security vulnerabilities. Fable 5, released recently, is a version of Mythos with guardrails to block high-risk responses. The government's concern is a claimed jailbreak of Fable 5, but Anthropic argues this capability is already available in other models.