Anthropic's Claude AI model, which was blacklisted by the Pentagon for refusing to loosen safeguards for military use of its AI, reached No. 1 in U.S. app downloads after the company lost its Pentagon contract over the issue. The clash with Anthropic has sparked interest in Claude, with some social media users calling for the removal of ChatGPT over OpenAI's deal with the Pentagon. The company has defended its decision to use its AI for mass surveillance and autonomous lethal weapons, promising to challenge any supply chain risk designation in court. The news of Claude's success has fueled interest in the AI race, particularly in enterprises following several product launches.