A private journal kept by OpenAI President Greg Brockman has become courtroom evidence in the Elon Musk vs. OpenAI trial. The diary entries, spanning a decade, detail Brockman's thinking about transitioning OpenAI from a non-profit to a for-profit entity, including estimates of a pathway to $1 billion in personal net worth amid a $30 billion company valuation.
The entries were originally sealed in October 2025 before being unsealed in January 2026. They cover internal debates about OpenAI's structure, financial trajectory, and tensions between building world-changing technology and personal wealth calculations.
One entry addresses Elon Musk's departure in 2018, noting it was a morale hit partly due to concerns about Musk's pursuit of AGI. Brockman faced questioning about Musk's core allegation-that OpenAI committed "theft" of its founding mission by pivoting toward profit.
Musk co-founded OpenAI as a non-profit in 2015. The lawsuit claims CEO Sam Altman betrayed the original charter by converting it into one of the most valuable private AI companies. OpenAI's defense argues the capped-profit structure was necessary to attract capital for competing in the AI arms race.
All AI prompts used internally are logged and potentially accessible in litigation, serving as a case study for firms operating in regulatory gray zones.