Six Tech Billionaires Walked Into a Courtroom. The $150 Billion Question Never Got Answered.

I've covered plenty of AI industry drama this year, but nothing else came close to three weeks in an Oakland federal courtroom this spring, where the two men who co-founded OpenAI together in 2015 sat across from each other as legal adversaries, one seeking $150 billion from the other. The trial produced testimony about exact billion-dollar net worth figures, a car-theft analogy that's now permanently attached to Elon Musk's public record, and a verdict that took less than two hours to reach — after which almost nobody involved actually got the answer to the question the case was supposed to settle. The direct answer: Elon Musk sued OpenAI, CEO Sam Altman, president Greg Brockman, and Microsoft in 2024, alleging they violated OpenAI's founding nonprofit mission and unjustly enriched themselves by converting the organization into a for-profit enterprise, seeking $150 billion in damages and Altman and Brockman's removal from leadership. After a three-week trial in April and May 2026, a federal jury dismissed all claims in under two hours — ruling that Musk waited too long to file the lawsuit, without ever deciding whether OpenAI actually breached its charitable obligations. Musk's attorneys say they plan to appeal. Quick Facts Detail Info Plaintiff Elon Musk Defendants OpenAI, Sam Altman, Greg Brockman, Microsoft Amount sought $150 billion Core claims Unjust enrichment, breach of charitable trust Musk's original contribution to OpenAI $38 million (as seed funding, via an intermediary) OpenAI founded 2015, as a nonprofit research organization Musk left OpenAI's board 2018 Musk founded rival xAI 2023 Trial location and dates Federal court, Oakland, CA; April 27 to mid-May 2026 Jury deliberation time Under two hours Verdict All claims dismissed — jury found Musk waited too long to sue What the jury did NOT decide Whether OpenAI actually breached its nonprofit mission Musk's next step Plans to appeal, per his attorney How Two Co-Founders Became Courtroom Adversaries OpenAI was founded in 2015 as a nonprofit research lab, with Musk among its co-founders and an early financial backer, contributing $38 million in seed funding through an intermediary. He left the organization's board in 2018, and the company went on to restructure around a "capped-profit" arm that eventually took in billions in investment from Microsoft, most notably a $10 billion investment in exchange for intellectual property rights and a share of future profits. Musk founded his own rival AI company, xAI, in 2023. Musk's lawsuit, filed in 2024, accused Altman and Brockman of what he characterized as stealing a charity — arguing that OpenAI's shift toward a profit-driven structure betrayed the founding promise to build AI for the benefit of humanity broadly, rather than for the financial benefit of its leadership and investors. He sought $150 billion in damages and demanded that Altman and Brockman be removed from their leadership positions entirely. A federal judge, Yvonne Gonzalez Rogers, denied OpenAI and Microsoft's attempts to dismiss the case before trial, citing internal 2017 emails in which Brockman had reportedly written privately that OpenAI's leadership wasn't fully committed to the nonprofit structure — evidence that was enough to send the case to a jury rather than end it early. Ahead of the trial, OpenAI sent a letter to its own investors and banking partners warning them to expect what the company called deliberately outlandish claims from Musk once testimony began — a preemptive move suggesting OpenAI anticipated the trial would generate exactly the kind of headline-grabbing courtroom moments it ultimately did. The Trial: Billionaires Under Oath The three-week trial that followed was, by nearly every account, remarkable simply for the concentration of extreme wealth testifying in one courtroom. During cross-examination, Musk's attorney pressed OpenAI president Greg Brockman on the exact value of his personal stake in the company, suggesting it might be closer to $30 billion rather than the $20 billion figure initially discussed — an exchange Brockman didn't meaningfully dispute on the stand. Musk's own testimony centered on explaining why he waited roughly seven years after leaving OpenAI's board to file suit. He testified that he'd trusted reassurances from Altman over the years and only became convinced something had genuinely gone wrong after Microsoft's $10 billion investment in 2023. Asked to explain the delay, Musk offered a distinctive analogy from the stand: "Thinking that someone might steal your car is not the same as someone stealing it." He added that he would have sued sooner if he'd believed the alleged wrongdoing had actually happened sooner. OpenAI's defense rested on two connected arguments: that the organization's mission hadn't fundamentally changed and remains overseen by a nonprofit foundation board, and — more pointedly — that Musk didn't actually file his lawsuit until after he'd founded a directly competing