Elon Musk’s artificial intelligence startup xAI debuted its updated Grok-3 model, showcasing a version of the chatbot technology to challenge OpenAI days after the billionaire’s unsolicited cash bid to buy the company was rejected.

Elon Musk on Monday kicked off a demonstration of Grok 3, the next version of xAI's chatbot, promising it is "an order of magnitude more capable than Grok 2." Why it matters: The move comes as Musk has been engaged in a bitter rivalry with OpenAI that has included lawsuits,