Quick Summary
- The legal showdown between Elon Musk and OpenAI enters the courtroom Monday with jury selection in California
- Musk alleges OpenAI abandoned its original nonprofit charter with its 2019 for-profit pivot
- The lawsuit demands $150 billion in compensation and calls for ousting Sam Altman and Greg Brockman from executive roles
- Previously private communications reveal mounting friction between Musk and OpenAI’s leadership over governance and funding
- OpenAI’s anticipated public offering, potentially hitting a $1 trillion valuation, hangs in the balance
The long-anticipated courtroom battle between Elon Musk and OpenAI officially launches this week. Jury selection commenced Monday at the US District Court for the Northern District of California, with opening statements scheduled for Tuesday.
Musk helped establish OpenAI in 2015 together with Altman and Greg Brockman. His central argument: he contributed more than $44 million to the organization with the explicit expectation it would maintain its nonprofit status. Documentation filed with the court indicates his actual contributions totaled approximately $38 million spanning 2016 through 2020.
According to Musk’s complaint, OpenAI’s 2019 transformation into a for-profit structure caught him completely off guard. He’s now demanding $150 billion in compensation from both OpenAI and Microsoft, with any awarded funds designated for OpenAI’s philanthropic division.
Beyond monetary damages, Musk wants OpenAI returned to its original nonprofit framework. His petition calls for the immediate dismissal of Altman and Brockman from their executive positions, including Altman’s removal from the board of directors.
The roster of expected witnesses represents Silicon Valley’s elite. Elon Musk, Sam Altman, and Microsoft’s CEO Satya Nadella will all provide in-person testimony. Shivon Zilis, who previously served on OpenAI’s board and is the mother of four of Musk’s children, is anticipated to deliver crucial testimony.
Confidential records unsealed during discovery proceedings expose deepening divisions among OpenAI’s original founders. A 2017 diary entry from Brockman reads: “This is the only chance we have to get out from Elon. Is he the ‘glorious leader’ that I would pick?”
In a January 2018 email to associates, Musk declared “OpenAI is on a path of certain failure relative to Google.” He resigned from the board weeks later.
The For-Profit Dispute
OpenAI reorganized with a for-profit subsidiary in 2019, overseen by the original nonprofit entity. By October 2025, the company had transitioned to a public benefit corporation model. Microsoft currently maintains a 27% ownership position. The nonprofit component received equity valued at $130 billion.
OpenAI’s latest financing round established an $852 billion company valuation.
OpenAI disputes Musk’s narrative, asserting he was fully informed about the for-profit restructuring and actually proposed merging OpenAI into Tesla with himself as chief executive. According to OpenAI’s legal team, when Altman and Brockman rejected this proposal, Musk departed and launched his competing AI venture, xAI.
Microsoft rejects allegations of coordination with OpenAI, maintaining its partnership began only following Musk’s exit from the organization.
What’s at Stake
The proceedings could significantly impact OpenAI’s public offering strategy, which analysts project could achieve a $1 trillion market capitalization. A series of unfavorable revelations throughout the trial may create obstacles for that ambitious timeline.
The jury will deliver an advisory recommendation only. US District Judge Yvonne Gonzalez Rogers retains ultimate authority over the final ruling. Should the defendants be found responsible, the judge possesses authority to mandate OpenAI reverse its for-profit conversion.
The trial is projected to continue through mid-May.
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