Greg Brockman's Journal Emerges as Star Witness in Musk v. Altman Trial Over OpenAI's Founding

Greg Brockman's personal journal has transformed from private chronicle into courtroom evidence, emerging as what observers are calling a "star witness" in the legal battle between Elon Musk and Sam Altman over OpenAI's founding and direction. The OpenAI president's handwritten entries—documenting the company's earliest days—now sit at the center of a dispute that could reshape the AI industry's most influential organization.

Brockman, who co-founded OpenAI alongside Altman and Musk in 2015, maintained detailed journal entries about the organization during its formative years. But in a detail that may prove significant, Brockman has acknowledged he stopped writing about OpenAI in the journal beginning in 2023—the same year the company experienced internal upheaval with Altman's brief ouster and dramatic return. The journal's emergence as evidence raises questions about what contemporaneous observations it contains regarding OpenAI's founding mission, its relationship with Musk, and internal deliberations that could bear on the case.

The trial represents a collision between the world's richest man and the company that has become synonymous with the AI revolution. Musk has alleged that OpenAI betrayed its founding nonprofit mission by transforming into a for-profit entity closely aligned with Microsoft—claims the company disputes. Brockman's journal, offering a real-time window into OpenAI's origins, could provide jurors with unfiltered insight into what the founders actually intended when they launched the organization. The decision by Brockman to stop documenting OpenAI matters in 2023 adds another layer of complexity, potentially limiting the journal's relevance to more recent controversies while amplifying its significance for the founding-era questions at the heart of Musk's case.