OpenAI Accuses Elon Musk of "Legal Ambush" as $134 Billion Trial Nears

SAN FRANCISCO – The legal battle between Elon Musk and OpenAI has intensified into what the AI startup describes as a "legal ambush," following a series of last-minute amendments to Musk’s multi-billion dollar lawsuit.

With the high-stakes trial set to begin on April 27, 2026, in an Oakland federal court, OpenAI filed a blistering response on Friday, accusing the billionaire of "injecting chaos" into the proceedings. The company claims Musk is attempting to "sandbag" the defense by drastically shifting his demands just weeks before jury selection.

A Shift in Tactics

The original lawsuit, filed in 2024, accused OpenAI and its partner Microsoft of betraying their founding mission to develop artificial intelligence for the benefit of humanity. Musk alleged the organization essentially became a "closed-source de facto subsidiary" of Microsoft after transitioning to a for-profit model.

In his latest amendment, filed earlier this month, Musk made two significant changes:

• Redirecting Damages: Musk is now requesting that any awarded damages—which his experts estimate between $79 billion and $134 billion—be paid directly to OpenAI’s original nonprofit arm rather than to himself personally.

   

• Leadership Ouster: The tech mogul is seeking the immediate removal of CEO Sam Altman and President Greg Brockman from their roles, alleging they failed the organization's public mission.

   

OpenAI Strikes Back

OpenAI’s legal team characterized these moves as a desperate attempt to "recast a public narrative" that was originally seen as a personal grievance.

"Musk's proposed amendment would require the presentation of different evidence and different witnesses than the case he sponsored until three days ago," the filing stated, calling the maneuvers "legally improper and factually unsupported."

 

The company maintains that Musk is using the legal system to stifle a competitor while boosting his own AI venture, xAI. They previously released internal emails suggesting that during his time at OpenAI, Musk himself had advocated for a for-profit pivot and sought "absolute control" of the entity.

What’s Next?

The upcoming trial, presided over by Judge Yvonne Gonzalez Rogers, is being dubbed the "Trial of the Century" for the AI industry. If Musk succeeds, it could force a massive restructuring of OpenAI’s corporate governance and potentially jeopardize its partnership with Microsoft.

Jurors are scheduled to begin selection on Monday morning, marking the start of a face-off that will decide the future control and profit structure of the world’s leading AI developer.
 

The Core Topic of The Dispute

The core topic of the dispute is whether OpenAI breached its original "founding mission" as a non-profit organization by transforming into a for-profit entity heavily tied to Microsoft.

While the lawsuit began in 2024, it has evolved into a massive battle over corporate control and billions of dollars. Here are the primary pillars of the dispute:

1. The "Founding Mission" vs. For-Profit Pivot

• Musk’s Argument: He co-founded OpenAI in 2015 as an open-source, non-profit "charity" to build AI for the benefit of humanity. He claims the $13 billion partnership with Microsoft turned OpenAI into a "closed-source subsidiary" focused on profit.

   

• OpenAI’s Defense: They argue that the complexity and cost of building AGI required massive capital that a pure non-profit could not sustain. They also point to internal emails showing Musk himself once supported a for-profit pivot if he could have "absolute control."

   

2. $134 Billion in "Wrongful Gains"

• The Valuation: Musk's legal team argues that between 50% and 70% of OpenAI’s current value (estimated at nearly $100 billion) is directly attributable to the early funding, reputation, and talent Musk provided.

   

• The Recipient: In a recent twist, Musk amended his claim. He no longer wants the $134 billion for himself; he is asking the court to return that money to OpenAI’s non-profit arm to ensure the funds are used for the public good.

   

3. Leadership and Governance

• The Ouster of Sam Altman: Musk is now explicitly asking the court to remove Sam Altman (CEO) and Greg Brockman (President) from their leadership roles and the board.

   

• Equity Forfeiture: He wants the court to force Altman and Brockman to give up all their equity and personal financial gains, arguing these were obtained through a breach of their fiduciary duties to the original charity.

   

4. Competitive Sabotage?

• OpenAI's "Legal Ambush" Claim: OpenAI argues that Musk is using this lawsuit as a "harassment campaign" to slow down a competitor. Since Musk launched his own AI company (xAI), OpenAI claims he is trying to "decapitate" their leadership and drain their resources right before their planned IPO in late 2026.

   

Key Trial Details

• Trial Date: April 27, 2026.

   

• Location: Oakland, California.

   

• Presiding Judge: Yvonne Gonzalez Rogers.

   

The outcome could fundamentally change how AI companies are structured, potentially forcing OpenAI to "unwind" its for-profit business and revert to a strict non-profit model.