Elon Musk vs Sam Altman feud takes a twist as xAI boss praises ChatGPT-5’s ‘I don’t know’ response

After having a heated spat with OpenAI CEO Sam Altman over the last week, Elon Musk has gone on to praise the company’s latest GPT-5 model. The xAI CEO, while replying to a post on X (formerly Twitter), called a response from GPT-5 “impressive.”

The comments from Musk come shortly after the billionaire had stated that his Grok 4 Heavy model continued to be among the best in the market despite the launch of GPT-5 by OpenAI.

In a screenshot shared by a user named Kol Tregaskes on X, the GPT-5 Thinking model, after taking 34 seconds to answer a…