Full Breakdown
Elon Musk’s $150 B Lawsuit Against OpenAI: Trial, Testimony, and the Future of AI Governance
5/10/2026, 1:51:27 AM
The Trial Over OpenAI’s Transformation
Elon Musk has sued OpenAI, its chief executive Sam Altman, president Greg Brockman, and major investor Microsoft for $150 billion. The complaint alleges breach of charitable trust and unjust enrichment after Musk’s 2015-2021 donations were used to convert the nonprofit into a for-profit entity. Musk seeks restitution to be donated to the OpenAI Foundation and a court order to unwind the restructuring and remove Altman from leadership.
Background: From Nonprofit Roots to For-Profit Giant
OpenAI was founded in 2015 as a tax-deductible nonprofit dedicated to safe, humanity-benefiting AI. A $1 billion Microsoft investment in 2019 triggered a shift to a capped-profit hybrid, and in late 2023 state attorneys general approved a full conversion to a for-profit corporation while retaining a limited-benefit nonprofit shell. Musk left the board in 2018, citing a conflict of interest, and later accused the remaining founders of violating the original mission.
Key Players
- Elon Musk – early donor (? $38 million), plaintiff.
- Sam Altman – OpenAI CEO, defendant.
- Greg Brockman – co-founder, president, testified on restructuring.
- Microsoft – largest outside investor, named defendant.
- Judge Yvonne Gonzalez Rogers – presiding U.S. District Judge.
- Shivon Zilis, Mira Murati, Helen Toner, Tasha McCauley – additional witnesses.
Timeline of the Lawsuit
- 2015: OpenAI incorporated as nonprofit.
- 2018: Musk departs board.
- 2019: Microsoft invests $1 billion.
- Late 2023: Attorneys general approve for-profit conversion.
- Aug 2024: Musk files complaint alleging fraud and deceit.
- Apr 26 2026: Judge dismisses fraud claims, leaving breach-of-trust claims.
- Apr 28 2026: Trial begins in Oakland; Musk testifies for > 7 hours.
- Early May 2026: Brockman, Murati, and former board members testify.
- Mid-May 2026: Verdict expected; Altman slated to testify next week.
Financial Stakes and Claims
Musk contributed tens of millions (reported as $38 million) and now seeks $150 billion in damages, to be funneled to the OpenAI Foundation. OpenAI’s for-profit arm is valued at $800 billion–$1 trillion; its nonprofit received a 26 % stake worth > $200 billion. Brockman’s personal stake is estimated at $30 billion.
Official Statements & Responses
OpenAI lawyer William Savitt argued that Musk “left it for dead” after losing control. Judge Rogers repeatedly emphasized, “This is not a trial on the safety risks of AI.” The court also rebuked Musk’s social-media insults, labeling them “Scam Altman” and “Greg Stockman.”
Criticism & Opposition
TechEquity CEO Catherine Bracy called the suit “petty” and urged California AG Rob Bonta to revisit the restructuring. Legal scholar Samuel D. Brunson described Musk’s case as “flimsy.” Former board members Helen Toner and Tasha McCauley testified that Altman’s honesty and candor were repeatedly in doubt.
On-the-Ground Reports
Judge Rogers chastised Musk for leading questions and for invoking a “terminator” scenario, stating the court would not discuss AI catastrophes. Courtroom observers noted Musk’s belt triggering metal detectors, the overflow room filled with livestream viewers, and Brockman describing a moment when Musk “stormed around the table.”
Conflicting Reports & Gaps
Sources differ on OpenAI’s valuation ($800 billion vs. nearly $1 trillion) and on Musk’s exact donation amount (tens of millions vs. $38 million). The nonprofit’s 26 % stake is cited as > $200 billion, yet Brockman’s personal stake is reported as $30 billion, creating uncertainty about the precise equity distribution.
Verbatim Quotes
- “I thought it was extremely important to have a counterbalance to Google,” — Elon Musk
- “To do that, Musk said, AI safety would have to take a back seat, Brockman told jurors, adding that Musk referred to Google as the "wolves" and AI safety advocates as "the sheep" who would become irrelevant unless they became wolves themselves.” — Greg Brockman
- “This trial, like many trials, boils down to who the jurors are going to believe,” — Judge Yvonne Gonzalez Rogers
- “By the end of this week, you and Sam will be the most hated men in America. If you insist, so it will be,” — Elon Musk (text to Brockman)
- “I actually thought he was going to hit me. I truly thought he was going to physically attack me. Instead, he just grabbed the painting and started to storm out of the room.” — Greg Brockman
What’s Next
Altman is expected to testify next week, after which the jury will deliberate. Legal analysts anticipate that, regardless of the verdict, the case may prompt California and Delaware attorneys general to reassess OpenAI’s restructuring agreements and could influence future governance models for AI enterprises.
