Elon Musk’s artificial intelligence startup xAI is rolling out Grok 4 just months after releasing its previous iteration, underscoring the frenetic pace of AI development.

AI owner Elon Musk made some big claims about Grok’s capability, saying it was “better than PhD level in every subject.”

Earlier today, Grok showed me how to tell if someone is a “good scientist,” just from their demographics. For starters, according to a formula devised by Elon Musk’s chatbot, they have to be a white, Asian, or Jewish man.