Elon Musk testified Monday in a federal court trial against OpenAI over allegations that the company breached its original artificial-intelligence development vision.

The case centers on whether OpenAI shifted from its non-profit roots to a commercial model. The outcome could redefine the legal obligations of AI companies toward their founding charters and early backers.

The trial took place in Oakland, California. By Monday, the proceedings had entered week two [1]. The legal battle involves Musk and OpenAI leadership, including CEO Sam Altman and president Greg Brockman.

Musk faced cross-examination on the third day of the trial [2]. During the testimony, Musk said an OpenAI lawyer attempted to trick him.

According to court records, Musk sent a text message to Greg Brockman two days before the trial began [3]. This communication occurred as both parties navigated the complexities of the legal dispute.

Musk said OpenAI betrayed the vision he helped create for AI development and is seeking damages [1]. Conversely, OpenAI said Musk's legal strategy and proposals were a "legal ambush" [4].

The proceedings continue in the U.S. federal court system to determine if the shift in OpenAI's operational structure constitutes a breach of contract or a betrayal of its initial mission.

“The trial in Oakland, California, enters its second week.”

This trial serves as a critical test for the governance of artificial intelligence. If the court finds that OpenAI's transition to a commercial entity violated its founding principles, it could create a legal precedent that limits how non-profit AI labs pivot toward for-profit models.