Somewhere in a discovery folder at a San Francisco law firm, there is a photocopy of a handwritten page. Greg Brockman wrote it himself, in 2017. It says the nonprofit promise was a lie.

A jury gets to read that page in 8 days.

On April 27, 2026, jury selection begins in a federal courthouse in Oakland for Musk v. OpenAI, Altman, Brockman, and Microsoft. The case is before Judge Yvonne Gonzalez Rogers. The damages number Musk's expert witness floated is $134 billion. The judge called the math "not particularly persuasive," suggested the numbers were pulled "out of the air," and then let it go to the jury anyway.

The diary that changed the case

Musk gave OpenAI roughly $38 million in seed funding between 2015 and 2018. He was told, in writing and in speeches and in investor pitches, that the organization would stay a nonprofit focused on safe, open AI for humanity. He is now suing on the theory that this was fraud.

For most of 2024 and 2025, the case looked like a billionaire grudge match with thin evidence. Then discovery turned up the diary. One 2017 entry from Brockman, surfaced in a 2025 evidence dump, reads: "I cannot believe that we committed to non-profit if three months later we're doing b-corp then it was a lie."

That's the co-founder and President of OpenAI. Writing in his own notebook. Using the word "lie." About the exact thing Musk is suing about.

On January 15, 2026, Judge Gonzalez Rogers denied OpenAI's motion for summary judgment and cited that diary specifically. The case was going to trial. This month, Musk amended his complaint to demand that any winnings go entirely to OpenAI's nonprofit arm, and that Altman and Brockman be removed as officers and from the nonprofit board.

A for-profit that became a planet

The "b-corp" comment is the tell. At that moment in 2017, OpenAI had been a nonprofit for about 18 months. The for-profit capped-profit subsidiary didn't even exist yet. That came in 2019. The Microsoft $13 billion partnership came after. The $500 billion secondary valuation came after that. The conversion into a fully commercial company, still nominally controlled by a nonprofit, came after that.

Every one of those steps was defended publicly as the only way to raise enough compute money to fulfill the mission. The diary suggests that someone inside the room thought the mission was already over by month three.

OpenAI's response is that Musk's suit is a competitive attack from the guy who runs xAI, not a genuine fraud claim. They are not wrong that Musk has an obvious interest in kneecapping them. The problem is that doesn't make the diary disappear. Juries don't grade motives. They grade evidence.

My Opinion

I'll be blunt. If you take billions of dollars from people based on a nonprofit promise, and your own President privately calls that promise a lie within three months, the ethical case is over. The only remaining question is the legal one, and juries do not love it when founders write their own confessions in cursive.

Here's what bugs me. Every AI safety conversation in 2025 and 2026 has quietly assumed that OpenAI's nonprofit structure was at least a nod toward public interest. That was the thing that made the compute race feel like it had a floor. The diary entry removes that floor. If the for-profit pivot was the plan within 90 days of incorporation, then the mission statement wasn't a guardrail. It was a marketing line used to raise cheaper capital and better talent before the price went up.

I don't think the jury is going to award $134 billion. I also don't think that matters. What matters is whether 12 people in Oakland decide, on the record, that OpenAI defrauded its own funders. If they do, every regulator currently staring at the AI Act, the California AI laws, and the FTC's open AI inquiry gets a new exhibit. The next time Altman sits in front of Congress and says "trust us, we're mission-driven," a jury verdict will be sitting on the desk next to him. That's not the end of OpenAI. But it's the end of the clean origin story, and the origin story was doing a lot of work.

Author: Yahor Kamarou (Mark) / www.humai.blog / 19 Apr 2026