Elon Musk’s xAI filed a lawsuit against Apple and OpenAI on Monday, accusing the companies of behaving like monopolies and claiming Apple deprioritized ChatGPT rivals like Grok in the App Store.

“In a desperate bid to protect its smartphone monopoly, Apple has joined forces with the company that most benefits from inhibiting competition and innovation in AI: OpenAI, a monopolist in the market for generative AI chatbots,” the lawsuit reads, referring to Apple’s partnership with OpenAI to integrate ChatGPT into its systems.

Billionaire entrepreneur Elon Musk’s artificial intelligence startup xAI sued Apple and ChatGPT maker OpenAI in U.S. federal court in Texas today, accusing them of illegally conspiring to thwart competition for artificial intelligence.