Barbara Ortutay
Updated April 29, 2026 — 9:14am,first published 5:40am
California: Elon Musk, the Tesla CEO, world’s richest man and OpenAI co-founder, took the stand on Tuesday (US time) in a high-stakes trial revolving around a bitter feud between himself and former friends Sam Altman and Greg Brockman that could reshape the future development of artificial intelligence.
The bickering billionaires’ appearances at the Oakland federal courthouse foreshadows the start of a legal drama that is expected to brim with intrigue and potentially embarrassing details about the two tech moguls. Musk filed the lawsuit against Altman and Brockman along with Microsoft over its investments in OpenAI, in 2024.
In the civil lawsuit, Musk, the world’s richest person with an estimated fortune of $US778 billion ($1.08 trillion), accuses Altman and Brockman of double-crossing him by straying from the San Francisco company’s founding mission to be a steward of a revolutionary technology. He is seeking damages and to fund the altruistic efforts of OpenAI’s charitable arm and Altman’s ouster from OpenAI’s board.
“Fundamentally, I think they’re going to try to make this lawsuit...very complicated, but it’s actually very simple,” Musk said. “Which is that it’s not OK to steal a charity.”
Musk was the first to testify, with his lawyer starting off asking about his life story. This included details about his move, at 17, from South Africa to Canada where for a time Musk said he worked as a lumberjack among other odd jobs, then to the US. He recounted the slew of companies he founded and runs, including SpaceX, Tesla, The Boring Company, Neuralink and others.
Asked how he has time for everything, Musk said he works 80 to 100 hours a week, doesn’t take vacations and owns no vacation homes or yachts.
Musk, who co-founded automaker Tesla and rocket company SpaceX, testified that he conceived of OpenAI while having conversations with Google co-founder Larry Page, who Musk said “was not being sufficiently caring about the safety of AI”.
“I said: What if AI wipes out humans? He said that would be fine as long as artificial intelligence survives. I said that’s insane,” Musk said. “Then he called me a species-ist for caring about humans more than AI.”
“I thought this was nuts and that we had to have some kind of counterpoint to Google,” Musk said.
“I came up with the idea, the name, recruited the key people, taught them everything I know, provided all of the initial funding,” Musk said.
“It was specifically meant to be for a charity that does not benefit any individual person. I could’ve started it as a for-profit and I specifically chose not to.”
Musk’s attorney, Steven Molo also asked Musk about his views on AI. Musk said he expects AI to be “smarter than any human” as soon as next year.
“It could kill us all,” he said. “We don’t want to have a Terminator outcome. We want to be in a Gene Roddenberry outcome, like Star Trek, not so much a James Cameron movie like Terminator.”
The kinship between Musk and Altman was forged in 2015 when they agreed to build AI in a more responsible and safer way than the profit-driven companies controlled by Google’s Page and Sergey Brin and Facebook founder Mark Zuckerberg, according to evidence submitted ahead of the trial.
The jury was elected Monday and the trial is scheduled to take three weeks.
OpenAI has brushed off Musk’s allegations as an unfounded case of sour grapes that’s aimed at undercutting its rapid growth and bolstering Musk’s own xAI, which he launched in 2023 as a competitor.
In his opening statement, OpenAI lawyer William Savitt told jurors “we are here because Mr Musk didn’t get his way with OpenAI”.
Savitt said Musk wanted “the keys to the kingdom”, and sued only after he failed and then in 2023 started his own AI business, xAI, now part of SpaceX.
Savitt said Musk used his promises to provide funding to bully OpenAI founding members and tried to take control of OpenAI and merge it with Tesla. In fact, he said Musk wanted to form a for-profit company and own more than 50 per cent of it. In the middle of discussions about OpenAI’s future, he added, Musk pulled the plug on $US5 million quarterly donations he was making.
‘Fundamentally, I think they’re going to try to make this lawsuit...very complicated, but it’s actually very simple. Which is that it’s not OK to steal a charity.’
Elon MuskThere is no record, Savitt said, of promises made to Musk that OpenAI was going to remain a nonprofit forever, or open-source everything. What Musk ultimately cared about, he said, was not OpenAI’s nonprofit status but winning the AI race with Google.
Molo said the case is not about Musk, but rather Altman, Brockman and Microsoft.
By 2017, about two years after OpenAI’s founding, it became clear that OpenAI would need more money, and Molo said the founders eventually settled on the idea of creating a for-profit arm of OpenAI that would support the nonprofit. Terms were capped for investors so they “couldn’t make infinite profit.”
“There is nothing wrong with a nonprofit having a for-profit subsidiary, but (it) has to advance the mission,” Molo said.
Microsoft initially invested $US2 billion in OpenAI. Then, in 2022, news spread that OpenAI had done a deal with Microsoft and “this was a horse of a completely different colour”, he said. It was a “gamechanger”, Molo said, that violated “every commitment” OpenAI made not just to Musk but to the world. It was no longer open source, it became a for-profit company for the benefit of the defendants and Microsoft was going to have control, through licensing, of much of its intellectual property, Molo said.
Musk’s side is expected to present a tale chock-full of alleged betrayal, deceit and ambition that caused OpenAI to pivot from its founding mission as an altruistic startup to a capitalistic venture now valued at $US852 billion.
Altman, OpenAI’s CEO, is also expected to testify, along with Microsoft CEO Satya Nadella, one of the technology leaders who helped fund the late 2022 release of ChatGPT, the chatbot that unleashed the current AI boom that has propelled the stock market to record heights.
Altman’s court appearance likely made him unavailable to attend an Amazon event across San Francisco Bay on Tuesday at which both companies announced an expanded partnership.
“I wish I could be there with you in person today,” Altman told attendees of Amazon’s event in San Francisco via a prerecorded video message. “My schedule got taken away from me today.”
AP, Bloomberg, Reuters
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