In a blog post, CEO Dario Amodei confirmed reports that the Defense Department had sent them a letter formally designating them a supply-chain risk, and said Anthropic planned to challenge them in court. He also clarified how it would currently impact Claude users:
The language used by the Department of War in the letter (even supposing it was legally sound) matches our statement on Friday that the vast majority of our customers are unaffected by a supply chain risk designation. With respect to our customers, it plainly applies only to the use of Claude by customers as a direct part of contracts with the Department of War, not all use of Claude by customers who have such contracts.














