Elon Musk's xAI has launched Grok, challenging ChatGPT and Google's Bard. Grok is characterized by its 'bit of wit' and 'rebellious spirit', answering 'spicy questions' that other AIs cannot tackle. By accessing real-time data from X, Grok provides more timely answers compared to its competitors. Musk aims to transform X's business model and enhance subscription appeal through new services like Grok, ultimately achieving higher revenue generation.