Musk accuses OpenAI of betraying its mission, while the defense highlights his own attempts to exert corporate control and recruit.
In a landmark federal trial in Oakland, California, tech mogul Elon Musk took the witness stand on April 29, 2026, to testify against OpenAI and its leadership. The case, which pits Musk against CEO Sam Altman and President Greg Brockman, centers on allegations that the organization “looted a charity” by shifting from its original nonprofit mission to a profit-driven model valued at over $800 billion.
The “Idea” vs. The Execution
During his testimony, Musk characterized OpenAI as his “brainchild,” claiming he provided the name, initial funding, and key recruitment efforts. “If we make it OK to loot a charity, the entire foundation of charitable giving in America will be destroyed,” Musk told the jury, framing the lawsuit as a fight for public interest rather than personal gain. He argued that the pivot to a for-profit structure was a “betrayal of trust” to the original donors who believed they were funding an open-source safeguard against rogue AI.
However, OpenAI’s legal team, led by William Savitt, painted a different picture. They presented evidence suggesting Musk himself pushed for a for-profit transition as early as 2017, seeking a majority stake and CEO status to gain “the keys to the kingdom.” Savitt argued that Musk only sued after his attempts to consolidate control failed and he eventually founded his own competitor, xAI. This narrative suggests that Musk’s grievance is not with the profit motive itself, but with his lack of control over it.
The Financial Disparity and Talent Wars
A significant point of contention involved Musk’s actual financial contributions. While Musk had previously claimed on social media to have invested $100 million in OpenAI, court records revealed the actual figure transferred was $38 million between 2016 and 2020. Musk defended the discrepancy, stating that his reputation and the “technical talent” he helped recruit, such as Ilya Sutskever, provided the remaining value.
The defense countered by highlighting the “talent war” that ensued between Musk’s companies and OpenAI. Emails presented in court showed Musk attempting to recruit top OpenAI engineers to Tesla’s Autopilot team, even while he served on the OpenAI board. This “cross-pollination” of talent, the defense argued, proves that Musk viewed AI as a competitive asset for Tesla long before the nonprofit’s official pivot.
Tesla’s AGI Roadmap and Contradictions
The defense highlighted contradictions between Musk’s public statements and his sworn testimony regarding Tesla. While Musk recently predicted AI would be “smarter than any human” by 2027, cross-examination focused on his admission that Tesla’s current AI development is specialized for self-driving rather than the pursuit of general-purpose AGI.
This distinction is crucial; if Tesla is not pursuing AGI, Musk’s claim that OpenAI’s success harms his own ventures becomes harder to prove. Musk maintained that while Tesla is specialized, the underlying compute and neural network structures are the building blocks of what will eventually become AGI, asserting that “all roads lead to the same destination.”
Expert Testimony and Future Stakes
The trial features high-profile witnesses, including UC Berkeley professor and AI safety expert Stuart Russell. Russell is expected to testify on the inherent risks of pursuing AGI without adequate safeguards, though the judge has limited his testimony regarding “catastrophic risks” to avoid prejudice.
As the trial continues, the court will hear from Greg Brockman and Microsoft CEO Satya Nadella. Musk’s lawsuit seeks $150 billion in damages and the removal of Altman and Brockman from the board. The outcome could fundamentally reshape the legal responsibilities of tech founders and the future of AI governance.
