This is the smartest AI in the world,” Musk said. He did not mention the chatbot’s viral posts praising Hitler and calling itself “MechaHitler.”

The tech billionaire unveiled its latest version, Grok 4, which he claims is "smarter than almost all graduate students, in all disciplines, simultaneously."

Built using huge amounts of computing power at a Tennessee data center, Grok is Musk's attempt to outdo rivals such as OpenAI's ChatGPT and Google's Gemini in building an AI assistant that shows its reasoning before answering a question.

In a late-night announcement, X owner Elon Musk unveiled the new Grok 4 chatbot. Here's everything you need to know about it.

Elon Musk’s SpaceX has agreed to invest $2 billion in xAI, investors close to the companies said, nearly half of the Grok chatbot maker’s recent equity raise. Musk has repeatedly mobilized his business empire to boost the AI startup,

Billionaire Elon Musk shocked his xAI workers by asking them to download a productivity tracking software on their personal computers. Musk made downloading the software, called Hubstaff, mandatory for all employees working to tutor his artificial intelligence chatbot Grok,