We were in a crowded conference room that day—ten of us around the table, focused, listening, jotting notes. The discussion wasn’t about colors or layouts. It was about understanding what truly ...

NO ONE DOUBTS that artificial intelligence (AI) will change the world. But a doctrinal dispute continues to rage over the design of AI models, namely whether the software should be “closed-source” or ...

Mr. Musk’s move to open up the code behind Grok is the latest volley in a war to win the A.I. battle, after a suit against OpenAI on the same topic. By Kate Conger and Cade Metz Reporting from San ...