OpenAI CEO Sam Altman took the witness stand Tuesday to defend his business record in a trial pitting him against Elon Musk, rebutting testimony that disparaged his leadership at a pivotal time for ...

Altman is defending himself against Musk’s claims that he’s trying to enrich himself at the expense of OpenAI’s original nonprofit mission.

The OpenAI chief rejects claims he deceived Elon Musk as high-stakes AI trial nears its end ...

The trial pits two of tech's most famous personalities against each other and could lead to seismic changes for the maker of ChatGPT.

Musk’s lawyers questioned Altman over allegations of deception and his network of financial investments, but the OpenAI CEO painted a picture of Musk as obsessed with controlling the company.

OpenAI CEO Sam Altman has begun his testimony against Elon Musk in a high-profile jury trial in a California federal courtroom.

OAKLAND, Calif. (AP) — OpenAI CEO Sam Altman took the witness stand Tuesday to defend his business record in a trial pitting him against Elon Musk, rebutting testimony that disparaged his leadership ...

The jury ruled Musk brought his lawsuit too late to find Sam Altman, OpenAI, or Microsoft liable for the claims the Tesla CEO brought against them.

Video from around the world on the latest news developments, with insight from Wall Street Journal editors and reporters.

Musk had sought to oust Altman from his leadership position over claims that he and others breached their duty to OpenAI's original nonprofit mission and unjustly enriched themselves.

Elon Musk seems tired and cranky. On Thursday, he took the stand for the third day in a four-week trial stemming from his lawsuit alleging that OpenAI abandoned its mission and should be blocked from ...

The jury ruled that Musk waited too long to sue and found Altman, co-founder Greg Brockman and OpenAI not liable on all ...