Anthropic Pulls AI Models After U.S. Export Ban, Citing Dual-Use Risks

Anthropic took its Claude Fable 5 and Mythos 5 AI models offline after a US government export-control directive barred foreign nationals from using them. The company had warned that these models can both find and exploit software vulnerabilities, creating dual-use risks. Mythos 5 was privately released to a select working group, while Claude Fable 5 was publicly available but restricted from answering cybersecurity and biology queries; Anthropic continues talks with the White House to restore access.