Greg Brockman's deeply personal journal, written only for himself over 15 years, has become the centerpiece of Elon Musk's lawsuit against OpenAI, exposing the internal tensions that fractured the company's founding team. The OpenAI president and co-founder spent two days in an Oakland federal courthouse reading entries aloud to a jury while roughly 1,200 strangers watched on YouTube livestream, describing the experience as "very painful".

What Did Brockman's Journal Reveal About OpenAI's Early Conflicts?

The roughly 100-page journal tracks Brockman's decision to drop out of college, his work as one of Stripe's first employees, and the 2015 co-founding of OpenAI with Musk and Sam Altman from his apartment in San Francisco's Mission District. The document stopped in 2023, the year the board briefly ousted both Brockman and Altman, though he has not explained why he ceased writing.

The most contentious passage came from August 21, 2017, when Brockman typed: "Ok so what do I really want? This is the only chance we have to get out from Elon...Financially what will take me to $1B?". Musk's legal team circled this entry more than a dozen times, questioning why Brockman, whose stake in OpenAI is now worth around $30 billion, hadn't donated the extra $29 billion to the nonprofit organization.

But the most damaging exhibit for OpenAI came from November 6, 2017, just before a pivotal meeting with Musk. Brockman had written: "cannot say that we are committed to the non-profit. If three months later we're doing b-corp then it was a lie...the true answer is that we want him out". He added: "it'd be wrong to steal the non-profit from him. to convert to a b-corp without him. that'd be pretty morally bankrupt". Musk's legal team called this a "smoking gun" proving OpenAI's founders planned to convert the nonprofit into a for-profit entity without honoring their original commitments to him.

How Did OpenAI's Defense Reframe the Journal Entries?

When OpenAI's lawyer Sarah Eddy questioned Brockman, he described his writing style as "chain of thought," the same reasoning method used by artificial intelligence models to work through complex problems. He explained that he often typed out other people's positions to understand them, which is why his entries can appear self-contradictory. Sometimes he pasted in text messages from others, making the journal less a record of his actual beliefs and more a transcript of him thinking aloud.

Eddy walked the jury through earlier paragraphs of the same entries to show that Musk's team had extracted the most damaging fragments out of context. The "steal the non-profit" line, Brockman testified, applied only to a hypothetical scenario where the co-founders voted Musk off the board, which they never did. Musk left voluntarily in February 2018.

The trial also revealed the personal dynamics that fractured the founding team. In August 2017, Musk summoned the group to what he called the "haunted mansion" he had just purchased near San Francisco. Amber Heard, his partner at the time, served whiskey while Ilya Sutskever, OpenAI's head of research, had commissioned a painting of a Tesla as a peace offering. Musk had separately gifted each co-founder a Model 3 vehicle.

Steps to Understanding the Core Dispute in the OpenAI Lawsuit

• The Original Commitment: Musk claims he seeded OpenAI with $38 million in donations based on promises that the company would remain a nonprofit focused on AI safety, not profit maximization.
• The Conversion: OpenAI converted to a for-profit structure with a nonprofit parent holding a stake, allowing the company to raise billions in venture capital and generate revenue through ChatGPT subscriptions.
• The Damages Sought: Musk is seeking $150 billion in damages and a court order unwinding the for-profit conversion, arguing that Altman and Brockman "stole a charity" he founded.
• The Financial Stakes: The OpenAI nonprofit now holds a stake in the for-profit worth more than $150 billion, making it the best-resourced nonprofit in the world by Brockman's own count.

When Brockman refused Musk's demand for full control of OpenAI's for-profit arm, Musk went silent for several minutes, then stood up and said "I decline". He walked around the table, grabbed the Tesla painting, and headed toward the door. Before leaving, he turned and asked when the others would be quitting OpenAI. Brockman testified: "I actually thought he was going to hit me".

Brockman

Musk stopped his donations soon after and left the board by February 2018, eventually founding xAI, whose Grok chatbot now competes directly with ChatGPT. The trial has exposed not just the financial stakes but the personal betrayal Musk felt when the company he helped launch pursued a path he explicitly opposed.

What Other Evidence Has Emerged in the Trial?

Beyond Brockman's journal, the trial has included testimony from multiple OpenAI insiders and Microsoft executives. Former chief technology officer Mira Murati testified that Altman pitted executives against each other and ran what she called a chaotic environment. Ilya Sutskever, OpenAI's former chief scientist, revealed an ownership stake in the for-profit arm worth about $7 billion, making him one of the largest known individual shareholders. Sutskever said he felt he had "put my life into it" and "cared for it" deeply.

Microsoft CEO Satya Nadella acknowledged that Microsoft had discussed 14 potential board members who would join OpenAI if Altman returned, and that Microsoft's early $14 billion investment has grown into a stake worth more than $200 billion. Nadella described the board's decision to fire Altman in November 2023 as "amateur city" and said he "never got clarity" about the lack of candor that led to their decision.

"I felt a great deal of ownership of OpenAI. I felt like I put my life into it, and I simply cared for it, and I didn't want it to be destroyed," said Ilya Sutskever, former chief scientist at OpenAI.

Ilya Sutskever, Former Chief Scientist at OpenAI

The trial has also exposed Brockman's personal financial interests that had not previously been public. He disclosed that he has personally invested in several companies that signed major partnerships with OpenAI, including Cerebras, CoreWeave, and Helion Energy. Altman's similar pattern of investments has been scrutinized in the press for years, but Brockman's conflicts of interest had remained largely hidden until this week.

Two days before the trial began, Musk texted Brockman directly: "By the end of this week, you and Sam will be the most hated men in America. If you insist, so it will be". Judge Yvonne Gonzalez Rogers blocked the message from reaching the jury, but it underscored the personal animosity underlying the case.

The journal that Brockman wrote only for himself has transformed from a private record of his thoughts into the most scrutinized document in one of the largest corporate disputes in tech history. As he told the court when asked who his intended audience had been: "Myself." He added quietly: "It isn't anymore".