Elon Musk on Thursday unveiled Grok 4, the latest AI model from xAI, his multibillion-dollar initiative to rival OpenAI and Google. Without citing detailed evidence, Musk claimed that the model aces standardized tests and exhibits doctorate-level knowledge in a wide array of different disciplines. "Grok 4 is a postgrad-level in everything," Musk said during an hour-long live broadcast, which began after midnight in New York. "At least with respect to academic questions, Grok 4 is better than PhD level in every subject. Competing AI developers, such as OpenAI and Google, have routinely released similar publications for their models.