The U.S. is controlling global access to the world's most powerful AI

The U.S. Commerce Department ordered Anthropic to block all foreign nationals from accessing its most advanced AI models (Claude Fable 5 and Mythos 5) under export control law, forcing a global shutdown. After Anthropic significantly weakened the models' capabilities, the department lifted restrictions—establishing a precedent for treating AI service access as a controlled export, despite uncertain legal grounding.

This Wire brief sits within Fusion42's coverage of AI Frontier Models. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur reasons over.