Anthropic's Shutdown Exposed a New Concentration Risk
Organizations around the world woke up on June 12 to discover that a capability available the day before was suddenly gone. Anthropic's Fable 5 and Mythos 5 models, among the company's most advanced artificial intelligence systems, were reportedly taken offline following a U.S. government directive requiring access to be restricted to American citizens. Because verifying every user's nationality in real time was not practically feasible, Anthropic reportedly responded by shutting down access altogether. The decision affected users far beyond the United States, including organizations in Australia, Canada, New Zealand, and the United Kingdom. According to multiple reports, it also cut off access for the UK's AI Security Institute while it was actively evaluating the systems.