Elon Musk Testifies in OpenAI Trial Against Altman
Elon Musk delivered his opening testimony on April 28, 2026, as the lead witness in the federal court case he filed against OpenAI. The trial, known as Musk v. Altman, places Musk directly in the courtroom facing off against OpenAI CEO Sam Altman and company president Greg Brockman.
Musk Steps Up as First Witness
Musk, a key figure in the AI industry through his roles at Tesla, SpaceX, and xAI, began testifying in the California federal courtroom. This high-profile jury trial marks a significant escalation in the long-running dispute between Musk and OpenAI's leadership. Court proceedings are expected to feature insights from major AI players, setting the stage for detailed examinations of the company's direction.
The case has drawn attention as part of ongoing live coverage of the battle over OpenAI's future. Musk's appearance underscores his personal stake in the outcome, given his early involvement with the organization.
Origins of the Conflict
Musk, Altman, and Brockman formed part of OpenAI's initial founding team back in 2015. OpenAI started as a nonprofit effort aimed at advancing artificial general intelligence, or AGI, in a way that serves all of humanity. Musk contributed up to $38 million in the early stages to support this goal.
Tensions arose over OpenAI's structure and mission. Disagreements included proposals to integrate the company with Musk's Tesla. These issues led to Musk's departure from the team. Years later, he launched xAI, positioning it as a direct rival to OpenAI. xAI operates under the umbrella of Musk's SpaceX.
OpenAI, meanwhile, transitioned toward a for-profit model, securing major backing from Microsoft. This shift has fueled Musk's criticisms, as he views it as a departure from the original nonprofit principles. Musk has publicly expressed concerns about AI development prioritizing safety and broad access over commercial gains.
History of Legal Battles
Musk has pursued at least four lawsuits against OpenAI in recent years. Several of those earlier actions were dropped or dismissed by courts. The current suit stands apart, advancing to a full jury trial in a California federal court.
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Defendants include Altman, Brockman, Microsoft, and OpenAI. Anticipated witnesses comprise Microsoft CEO Satya Nadella, Microsoft CTO Kevin Scott, and former OpenAI CTO Mira Murati. Murati now leads her own venture, Thinking Machines Lab, after leaving OpenAI.
This trial represents a rare public airing of internal AI industry conflicts. Musk's persistence highlights deep divisions over how AGI should be pursued, with implications for competition between companies like xAI and OpenAI.
Key Claims and Requested Remedies
At the heart of the lawsuit lies the accusation that OpenAI abandoned its foundational commitment to create AGI benefiting humanity. Musk alleges violations including potential fraud, unjust enrichment, and breach of the organization's charitable trust.
He demands court intervention to remove Altman and Brockman from their leadership roles. Musk also seeks to end the personal financial gains they received from OpenAI's for-profit activities. Among other requests, he calls for reversing OpenAI's move to a for-profit structure.
These claims revisit debates from OpenAI's early days. The nonprofit origins emphasized open research and safety, contrasting with today's capped-profit model tied to Microsoft investments. The trial could influence future AI governance and structures across the sector.
Elon Musk's testimony sets a tone for what promises to be an intense examination of OpenAI's evolution. As proceedings continue, revelations from emails and internal discussions may shed light on pivotal decisions.