Full Breakdown
Elon Musk vs. OpenAI: Trial Over Alleged Breach of Nonprofit Mission
4/27/2026, 9:49:07 PM
Lawsuit and Trial Overview
Elon Musk filed a 2024 civil suit against OpenAI, CEO Sam Altman and president Greg Brockman, alleging breach of the nonprofit charter. Jury selection began Monday, 27 April 2026, in Oakland federal court, with opening statements Tuesday and Judge Yvonne Gonzalez Rogers presiding over a two-to-three-week trial.
Founding History and Structural Shifts
OpenAI was founded in 2015 as nonprofit by Musk, Altman and Brockman, with Musk gave $38 million. After Musk left board, for-profit subsidiary launched in 2019 and retained a 26 % stake. Microsoft’s investment raised valuation above $850 billion, backing a $1 trillion IPO.
Principal Parties
The case pits Elon Musk—founder of xAI—against OpenAI’s chief executive Sam Altman and president Greg Brockman. Microsoft, with 27 % of OpenAI, is represented by CEO Satya Nadella. Judge Yvonne Gonzalez Rogers presides; former board member Shivon Zilis is a witness.
Financial Stakes and Valuations
Musk seeks $150 billion in damages ($134 billion) for OpenAI’s charitable arm. He claims 50-75 % of the nonprofit’s 26 % stake reflects his $38 million contribution. OpenAI is valued over $850 billion; Microsoft owns 27 % and backs a $1 trillion IPO.
Why It Matters / Impact
The lawsuit may postpone OpenAI’s IPO, reshape its governance model, and intensify regulatory and public scrutiny of AI firms’ commitment to nonprofit ideals versus commercial profit in the United States. The case also fuels growing public skepticism about generative AI.
Official Statements & Responses
OpenAI calls the suit baseless, accusing Musk of seeking control for his xAI venture and denying any collusion with Microsoft. Musk alleges OpenAI concealed its for-profit shift, misused his name, and breached the nonprofit charter.
Criticism & Opposition
OpenAI argues Musk’s motive is to dominate AI through xAI, citing his demand for the CEO role. Altman labels the lawsuit as driven by jealousy and regret for leaving OpenAI in public statements.
Conflicting Reports & Gaps
Sources differ on the damage claim—one filing lists $150 billion, another $134 billion. Musk’s lawyers estimate 50-75 % of the nonprofit’s 26 % stake derives from his contributions, a figure not independently verified currently.
Verbatim Quotes
- "This is the only chance we have to get out from Elon." — Greg Brockman, President, OpenAI
- "The truth and the law are on our side. This lawsuit has always been a baseless and jealous bid to derail a competitor." — OpenAI, X post
- "This case has always been about Elon generating more power and more money for what he wants." — OpenAI, X post
- "motivated by jealousy" — Sam Altman, CEO, OpenAI
- "regret for walking away" — Sam Altman, CEO, OpenAI
What's Next
Jury deliberations are slated for mid-May, after which Judge Gonzalez Rogers may issue rulings on damages and any structural remedies. The outcome will influence OpenAI’s planned IPO and the broader AI market in the United States.
