Tesla and SpaceX CEO Elon Musk and OpenAI CEO Sam Altman have been fighting on X this week, reigniting their years-long, back-and-forth war of words.

It started on Monday when Musk posted on X that his AI company, xAI, would be taking "legal action" against Apple. Musk accused Apple of "playing politics" for not putting Grok in its "Must Have" section.

"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," Musk wrote. "xAI will take immediate legal action."

Readers added community notes to Musk's post, pointing out that other apps, including Perplexity and Deepseek, have reached No. 1. But OpenAI CEO Sam Altman responded on X with claims of his own — that he's "heard"

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