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.

A federal judge on Tuesday rejected Elon Musk’s request to dismiss claims brought by OpenAI accusing the tech billionaire of engaging in a “years-long harassment campaign” against the company. U.S. District Judge Yvonne Gonzalez Rogers ruled OpenAI’s counterclaims are “sufficient” and can move forward as part of the lawsuit Musk brought against the ChatGPT