GPT-5 says 'I don't know' to user's question, Musk replies amid spat with Altman

An X user shared a screenshot showing him asking OpenAI's GPT-5 where the chatbot's virtual machines are located. "Short answer: I don't know – and I can't reliably find out," GPT-5 responded before giving a longer answer, which it said would be "useful for your spec". Days after an online spat with Sam Altman, Elon Musk called it "impressive response".