Key Points:
- Elon Musk takes Sam Altman to court over OpenAI’s transition from a charity to a massive business.
- Microsoft and OpenAI leaders face serious legal threats that could ruin future public stock plans.
- OpenAI reached a massive $852 billion valuation after Microsoft gave it a 27 percent stake in October 2025.
- The bitter rivalry features massive insults, including Musk trying to buy OpenAI for $97.4 billion.
The massive legal battle between billionaire Elon Musk and artificial intelligence giant OpenAI finally reaches the courtroom this Monday. Lawyers will select a jury in the United States District Court for the Northern District of California. Opening arguments will start right away on Tuesday morning. This historic trial brings years of bitter public arguments and massive financial disagreements into a formal legal setting, and the entire technology industry is watching closely.
The witness list looks exactly like a billionaire technology summit. Elon Musk plans to testify and share his side of the story. OpenAI Chief Executive Officer Sam Altman will also take the stand to defend his company. Microsoft Chief Executive Officer Satya Nadella also joins the list to protect his massive investment. Depending on how the lawyers play their cards, Musk could step up to the witness box as early as Tuesday afternoon.
The outcome of this trial carries massive weight for the entire artificial intelligence industry. If the court rules in Musk’s favor, the decision could completely ruin OpenAI’s plans for a future public stock offering. Musk built his entire lawsuit on the idea that Altman and OpenAI President Greg Brockman lied to him. He claims they tricked him about their secret plans to turn the company from a nonprofit charity into a massive cash machine. The lawsuit also names Microsoft as a key defendant because the software giant funded the new business model.
Turning the artificial intelligence lab into a real business allowed leaders to issue company shares. Selling these shares let them raise billions of dollars from outside investors. They desperately needed this cash to buy the massive computing power required to build and run their incredibly smart computer models. Building artificial intelligence costs a fortune in special computer chips and electricity. Company leaders felt they could not survive relying strictly on charity donations from tech founders.
Musk helped start OpenAI back in 2015 alongside Altman and Brockman. He says he put more than $44 million into the startup out of his own pocket during those early days. He handed over the money because everyone agreed the project would remain a nonprofit charity helping humanity. He argues that Altman and Brockman completely betrayed that original promise when they restructured the organization to chase profits and enrich themselves.
OpenAI fights back hard against these claims. Company lawyers say Musk actually supported the idea of making money. They claim Musk simply wanted to merge the startup directly into his electric car company, Tesla, and take total control as the boss. When Altman and Brockman refused that aggressive demand, Musk got angry and quit. The company says Musk cut all ties and started his own rival lab just to beat them. Recently, his rocket company, SpaceX, bought out his new artificial intelligence project, xAI, right before a planned public stock offering.
Despite the boardroom drama, OpenAI successfully changed its legal status to a public benefit corporation in October 2025. Microsoft scooped up a massive 27 percent stake in the new business structure. Meanwhile, the original charity arm, called the OpenAI Foundation, maintained a $130 billion stake. A recent fundraising round pushed OpenAI’s total value to an unbelievable $852 billion.
The trial will likely last through the middle of May. Interestingly, the jury will not make the final call on the matter. The jury will only offer an advisory verdict to the court. United States District Judge Yvonne Gonzalez Rogers holds all the real power. She will listen to the jury but ultimately make the final decision herself.
If the judge decides the defendants broke the law, she gets to pick the punishment. She could order extreme remedies to fix the situation. Legal experts say she might even force OpenAI to reverse its entire corporate transition and revert to being a pure nonprofit. This exact threat makes the trial incredibly dangerous for the company and its wealthy investors.
The ugly relationship between Musk and Altman constantly spills into public view. Musk uses his social media network, X, to insult the OpenAI leader regularly. In February 2025, Musk actually offered to buy OpenAI outright for $97.4 billion. Altman completely rejected the offer. He fired back a heavy insult, telling Musk he would rather buy X for just $9.74 billion. Now, these two rivals will settle their expensive feud in front of a federal judge.
