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.

Elon Musk's AI company xAI has launched the new version of its AI assistant, Grok. The problem? The launch comes almost immediately after Grok went on an antisemitic tirade on X, spewing hate speech and praising Hitler.

Grok 4 is xAI’s most advanced model yet, but early praise is clashing with old scandals and fresh tests of its limits.

Some X users suddenly became the subject of violent ideations by xAI’s flagship chatbot.

The release comes months after the AI startup launched its previous iteration, suggesting an ongoing lightning pace of AI development.