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Elon Musk has, among other things, filed a lawsuit claiming he is entitled to be compensated for "wrongful gains" that both OpenAI and Microsoft accrued from his early involvement in OpenAI.
The dispute is now part of an ongoing legal battle over the transformation of OpenAI from a non-profit research project into a commercially successful generative AI company, and is set for a jury trial in April 2026 in Oakland, California.
The heart of Musk's complaint is the assertion that he made a significant contribution to OpenAI by being their early financial and strategic support, and that the present value enjoyed by that company and its major partner, Microsoft, is thus derived unfairly from his contributions.
In a court document, Musk states that OpenAI's gain is in the range of $65.5 billion to $109.4 billion, while Microsoft's profits are within the interval from $13.3 billion to $25.1 billion from Musk’s early investment. Hence, the claim is for $134 billion. A figure more impressive than all the amounts seen in the recent IPOs.
Musk’s legal representatives grounded the argument on the notion that he, like an early investor in a startup, is entitled to get back a lion’s share of the value created. So, in this context, the conclusion was that he should get a large slice of the tremendous value in OpenAI’s valuation, which is usually pegged at around $500 billion due to recent funding rounds and market expectations.
In addition, the lawsuit alleges that OpenAI moved away from its original nonprofit mission and violated trust by pursuing commercial partnerships, most notably with Microsoft, a substantial shareholder of the firm.
OpenAI has quickly labeled Musk’s suit to be without merit and part of an ongoing “harassment campaign.” The company’s public statement described the claims as “unserious” and cautioned that the dramatic assertions are meant to mold public opinion rather than represent actual legal disputes.
Microsoft, on the other hand, has not given a detailed public response but has supported OpenAI in disputing the legal validity of the case and the calculation of the alleged damages.
Defendants, in a radical manner, have requested that the court limit or even bar trial testimony from the financial economist, C. Paul Wazzan, an expert witness for Musk, and have questioned the reliability of the calculations underlying the $134 billion claim. They contend that the numbers are unverified, unprecedented, and possibly misleading to the jury.
Legal and Practical Challenges Ahead
The case is structured as a proverbial maze for Musk. The proving of his early contributions, granting him such a big slice of the pie, particularly when those contributions were to a non-profit, is a complex legal road that goes around investment disputes. It requires reading contracts, non-profit administration, and the tech sector's value attribution.
Furthermore, the defendants' approach of branding the suit as merely a minor annoyance rather than a real claim might sway public and judicial opinion in their favor. OpenAI's and Microsoft's counter-arguments underscore the doubt about Musk's motives, potentially weakening his position before the jury. The initiated dispute may also affect the performance of other Musk’s businesses, particularly Tesla stock.
This lawsuit is certainly one of the boldest and most complicated legal disputes in the tech sector over the past years. The trial is set to take place, but the huge amount of money requested and the unclear legal issues suggest that a total victory (obtaining the $134 billion) will be difficult, both in terms of evidence and procedure. The public will be keenly interested when the courtroom battles begin in April 2026.