At the heart of the dispute is a 2017 internal power struggle at the fledgling startup that led to Altman becoming OpenAI’s CEO.

Elon Musk's lawyers faced off with OpenAI in court Tuesday as a federal judge weighed the billionaire's request for a court order that would block the ChatGPT maker from converting itself to a for-profit company.

Musk’s request to block OpenAI’s conversion is the latest move in a grudge match between the world's richest person and OpenAI CEO Sam Altman.

A federal judge weighed in Tuesday on a long-brewing legal feud between billionaires Elon Musk and Sam Altman over OpenAI, suggesting she’s unlikely to halt the company’s plan to restructure for now.

A California federal judge on Tuesday expressed doubt over Elon Musk's "irreparable harm" claims in his lawsuit against Sam Altman.

Elon Musk asked a judge to block OpenAI's attempt to transition from nonprofit to for-profit. It's not the first time he's feuded with CEO Sam Altman.

Elon Musk is stepping up his efforts to block OpenAI from restructuring as a for-profit company after it received billions of dollars from investors, including early funding from him.

Elon Musk's legal team challenges OpenAI's transition from a nonprofit to for-profit entity in federal court, citing a breach of founding principles.

Elon Musk's lawsuit against OpenAI on its shift to a for-profit entity might go to trial, ruled a federal judge. Musk co-founded OpenAI, and his legal move highlights tensions over its corporate restructuring.

A preliminary injunction stopping OpenAI’s conversion to a for-profit company is unlikely in a case of “billionaires versus billionaires,” said the judge.