Grok is owned by Musk’s artificial intelligence startup xAI.
Musk went on to say that “Apple is behaving in a manner that makes it impossible for any AI company besides OpenAI to reach #1 in the App Store, which is an unequivocal antitrust violation. xAI will take immediate legal action.”
He gave no further details.
In an emailed statement, Apple defended the fairness of its App Store.
“The App Store is designed to be fair and free of bias,” it said. “We feature thousands of apps through charts, algorithmic recommendations, and curated lists selected by experts using objective criteria. Our goal is to offer safe discovery for users and valuable opportunities for developers, collaborating with many to increase app visibility in rapidly evolving categories.”
The company has faced various allegations of antitrust violations in recent years.
A federal judge recently found that Apple violated a court injunction in an antitrust case filed by Fortnite maker Epic Games.