• Elon Musk's lawsuit against OpenAI and Microsoft (MSFT) is proceeding to trial in Oakland, California, with jury selection underway.
  • The case centers on allegations that OpenAI abandoned its nonprofit mission by shifting to a for-profit structure with Microsoft's backing.
  • A verdict could reshape AI governance and funding models, with implications for industry partnerships.

High-Stakes Courtroom Drama

Elon Musk arrived at the federal courthouse in Oakland on Thursday as opening statements began in his closely watched lawsuit against OpenAI and Microsoft. The trial, which follows failed attempts to dismiss the case, marks a pivotal moment in a dispute that has captivated the tech and investment worlds.

Musk, a co-founder of OpenAI, alleges that the company violated its founding nonprofit commitments by transitioning to a commercial structure and partnering closely with Microsoft. A federal judge earlier dismissed one claim—unjust enrichment against Microsoft—but allowed the core question of whether OpenAI breached its mission to proceed to a jury.

“This is about whether promises to the public mean anything,” Musk said outside the courtroom, according to people familiar with the matter. OpenAI declined to comment, and Microsoft did not immediately respond to requests for comment.

The Battle Over AI’s Soul

The lawsuit, filed in 2023, accuses OpenAI and CEO Sam Altman of abandoning the organization's original goal of developing artificial intelligence for the benefit of humanity. Instead, Musk argues, OpenAI became a profit-driven entity fueled by billions in Microsoft investment.

OpenAI has maintained that its shift to a capped-profit model was necessary to raise capital for costly AI development, and that it remains committed to safety and transparency. Microsoft, which has invested over $13 billion, says its involvement is standard for a strategic partner.

Jury selection concluded Wednesday, with a panel of 12 jurors sworn in. Legal experts say the trial could last several weeks.

Market and Industry Fallout

The case has drawn intense scrutiny from investors and policymakers, as it tests the legal boundaries of corporate mission statements in the rapidly evolving AI sector. A ruling against OpenAI could force structural changes, potentially disrupting its funding model and partnerships.

“This is existential for OpenAI,” said a corporate governance analyst not involved in the case. “If Musk wins, it could set a precedent that nonprofit promises are enforceable, which would ripple across tech.”

Shares of Microsoft were down 0.5% in midday trading, while AI-related stocks showed mixed reactions.

Correction: An earlier version of this article misstated the dismissed claim. The unjust enrichment claim against Microsoft was dismissed, not the entire case against OpenAI.

This article was updated to include market data and additional context.