Elon Musk's AI company debuts its new chatbot, Grok

ViewElon Musk’s new artificial intelligence company, xAI, released a chatbot over the weekend that will challenge existing models like ChatGPT. 

It’s called Grok, and the company said it has been modeled after the “Hitchhiker’s Guide to Galaxy,” a comedy sci-fi franchise popular in the 70s and 80s. It’s designed...