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.

The billionaire said in posts on X that the consumer tech giant was violating antitrust laws by giving preferential treatment to OpenAI on the App Store.

US District Judge Yvonne Gonzalez Rogers ruled on Tuesday that Musk would face allegations of weaponized legal claims and continued social media attacks against his former business colleague-turned-rival Sam Altman, and the artificial intelligence company that they co-founded together, which produces ChatGPT.