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 threatened to sue Apple for favoring ChatGPT over Grok in the App Store — and now he has. On Monday, Musk's AI company xAI officially filed a lawsuit against Apple as well as ChatGPT creator OpenAI over the two companies' business partnership.

Elon Musk's xAI startup has sued Apple and OpenAI. The suit accuses the pair of conspiring to thwart competition for artificial intelligence platforms.