During a recent online clash with Sam Altman, the CEO of OpenAI, Elon Musk experienced an unexpected twist when his own AI chatbot, Grok, publicly sided with Altman. The confrontation began after Musk accused Apple of unfairly promoting OpenAI’s ChatGPT in the App Store.

Musk then called Altman a "liar" in a heated exchange, prompting the OpenAI boss to ask whether Musk would sign a sworn legal statement declaring that he had never ordered changes to the X algorithm to harm competitors or help his own companies.