Elon Musk tells his side of OpenAI's beginnings in trial pitting him
against CEO Sam Altman
[April 30, 2026] By
BARBARA ORTUTAY
OAKLAND, Calif. (AP) — Elon Musk took the stand for the second day
Wednesday in the landmark trial that pits the world's richest person
against Sam Altman, a fellow OpenAI co-founder he accuses of betraying
promises to keep the company as a nonprofit dedicated to humanity's
benefit.
The trial centers on the 2015 birth of the ChatGPT maker as a nonprofit
startup primarily funded by Musk before evolving into a capitalistic
venture now valued at $852 billion.
Musk, who invested about $38 million in OpenAI from December 2015
through May 2017, gave his account of OpenAI’s early years, recounting
how he lost confidence that Altman would keep it a nonprofit. Questioned
by his lawyer Steven Molo, Musk said by late 2022 he was concerned
Altman was trying to “steal the charity.”
"It turned out to be true,” Musk said on the witness stand, wearing his
usual courtroom attire of a black suit and tie.
Altman, OpenAI's CEO, was in attendance at the federal courthouse in
Oakland, California, although he was not scheduled to testify on
Wednesday. The trial started Monday and is expected to last about four
weeks.
Lawyers for OpenAI have rejected the allegations brought in Musk's civil
lawsuit and said there were never promises that the company would remain
a nonprofit forever. The company has argued Musk's legal challenge is
aimed at undercutting OpenAI's rapid growth and bolstering Musk’s xAI,
which he launched in 2023 as a competitor.
During cross-examination, Musk repeatedly pushed back on questions.
OpenAI lawyer William Savitt was asking about emails Musk wrote before
OpenAI's founding in 2015 on whether it would be better to make it a
standard for-profit company and about tax deductions from his donations
to the nonprofit.
“Your questions are not simple,” Musk said. “They are designed to trick
me essentially.” Any simple answer, he said, would be misleading the
jury.
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Elon Musk arrives at the U.S. District Court in Oakland, Calif.,
Tuesday, April 28, 2026. (AP Photo/Godofredo A. Vásquez)
 Judge Yvonne Gonzalez Rogers stepped
in, asking Musk to answer whether it's true or false that OpenAI was
formed as a nonprofit in December 2015. Musk said in that case, the
answer was yes, but added that it is not always simple, comparing it
to asking “have you stopped beating your wife?”
“We are not going to go there,” the judge replied, to laughs in the
courtroom.
Despite moments of levity, the stakes are high at the trial, which
could sway the balance of power in artificial intelligence. Musk’s
lawsuit seeks Altman’s ouster from OpenAI’s board. If Musk wins, it
could derail OpenAI's plans for an initial public offering of its
shares.
Musk’s decision to stop funding the company contributed to a bitter
falling out between the former allies that's been evident throughout
the trial. On Wednesday, Musk said his views on Altman and his
OpenAI cofounders had three phases — from initial excitement to
losing confidence to a period in late 2022 when he thought “wait a
second, these guys are betraying their promise.”
Lawyers for OpenAI have said Musk sought to control the company for
himself.
Musk repeatedly testified that while he initially sought a majority
stake in OpenAI and control of four out of seven board seats, this
would eventually be diluted when OpenAI grew and gained more
shareholders. He compared it to his stake in Tesla, which he said is
now around 15% after he initially had a majority stake when the
electric car maker was founded over two decades ago.
OpenAI, however, claims there were no assurances that he would
eventually relinquish his board majority.
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