Elon Musk and Sam Altman are headed to court. Meet the 9 players to watch.

Elon Musk takes Microsoft and OpenAI's Sam Altman to trial on Monday. Witnesses include Satya Nadella, Shivon Zilis, Mira ...

Elon Musk attorney claims OpenAI, Sam Altman ‘stole a charity’ as high-stakes legal fight begins

Elon Musk’s legal battle against OpenAI begins with sharp accusations, as his attorney claims Sam Altman turned a nonprofit ...

Elon Musk testifies against OpenAI, seeking Sam Altman's ouster

Musk's lawyers say OpenAI leaders "stole a charity" and Musk warns about the potential dangers of AI: "We don't want to have ...

Elon Musk trial against Sam Altman to reveal OpenAI power struggle, jury is seated

By Deepa Seetharaman and Jonathan Stempel April 27 (Reuters) - The bitter legal fight between Elon Musk and the leading ...

Elon Musk vs Sam Altman Day 2: Tesla boss testifies he founded OpenAI as nonprofit to counter Google

Elon Musk took the stand on the second day of his landmark lawsuit against OpenAI, testifying that he founded the AI company ...

OpenAI ends its exclusive partnership with Microsoft

Since Microsoft invested $1 billion in OpenAI in 2019, the exclusive partnership between the two firms has been one of the ...

OpenAI and Microsoft just revamped their longstanding partnership. Will this impact Microsoft's artificial intelligence (AI) moat?

Microsoft has invested over $13 billion in OpenAI since 2019 and holds a 27% stake in the company as of late 2025. Microsoft ...