A key piece of evidence for Elon Musk's side in the trial is a diary kept by Greg Brockman for over a decade.

Dario Amodei took detailed notes on Sam Altman and Greg Brockman's behavior for years under the heading 'my experience with OpenAI subheading private do not share.'

Greg Brockman's diary entries discuss his desire to achieve a net worth of $1 billion as OpenAI grew.

Greg Brockman, an OpenAI co-founder, concluded his testimony in the trial where Elon Musk is suing him and others for allegedly "stealing a nonprofit."

Greg Brockman wrote in a 2017 diary entry that if OpenAI became a BC Corp three months later, their commitment to the nonprofit would be a lie.

On the day prior to the interview, plaintiff's lawyers in the Elon Musk vs. OpenAI trial questioned Greg Brockman about his truthfulness and alleged side deals with Sam Altman while maintaining an open dialogue with Elon Musk.