Elon Musk-owned xAI on Monday sued tech giants Apple and OpenAI over an alleged scheme to illegally dominate the artificial intelligence industry through a collaboration that equipped iPhones with AI tools.

“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.

Elon Musks firm had previously accused the Cupertino-based tech giant of giving special favor to ChatGPT in its App Store listings and editorial features.