Palantir's Karp attacked Anthropic's open-weights position: "if you want to win, you have to compete on the battlefield."

Anthropic remains the only leading frontier lab that hasn't signed the Open Secure AI Alliance letter backed by Meta, Nvidia, OpenAI, Google, Microsoft, and SpaceX. Amodei's counter is that Anthropic never sought a ban and would instead restrict advanced chips to authoritarian governments, crack down on industrial-scale distillation, and require safety testing of all sufficiently capable models, open and closed. Matthew Berman's 55-minute breakdown (63,282 views) walks the fracture in detail, anchored on Jensen Huang's first-ever X post on July 24, which doubled the letter to 50 signatories.