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.

Elon Musk accused Apple Inc. and OpenAI in a lawsuit of unfairly favoring the artificial intelligence company across iPhones and thwarting competition for other chatbot makers.

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