Researchers discovered long-lost computer code and used it to resurrect the early chatbot ELIZA. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

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 ...