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 released the newest artificial intelligence model from his company xAI on Wednesday night. In an hour-long public reveal session, he called the model, Grok 4, “the smartest AI in the world” and claimed it was capable of getting perfect SAT scores and near-perfect GRE results in every subject,

Grok 4 aligns its answers with Elon Musk's when it comes to controversial issues, users have discovered shortly after the company launched the new model.

AI's latest Grok 4 large language model appears to search for owner Elon Musk's opinions before answering sensitive questions about

The release of Grok 4 comes at a time when AI models are under intense scrutiny for content moderation issues.

The latest xAI model promises specialized coding capabilities, benchmark-beating reasoning, and something GPT-5 doesn't have: availability.