How Elon Musk Left OpenAI, According to Greg Brockman

The Pivotal Meeting: August 2017

In late August 2017, OpenAI's key figures gathered to discuss creating a for-profit subsidiary to commercialize its technology and fund the path to AGI (Artificial General Intelligence). This meeting would prove to be the breaking point between Elon Musk and his co-founders.

The Control Dispute

Musk's Demand: Full, "unequivocal" control of the new for-profit entity
Co-founders' Proposal: Equal shares among founders, with potential additional equity tied to cash investment
Alternative Considered: Connecting OpenAI to Tesla's AI work (over 20 variations discussed)

The Dramatic Exit

When told the others wouldn't grant him control, Greg Brockman described Musk's reaction:

"He got angry and upset. He sat for several minutes thinking quietly. Then... Musk said, 'I decline.' He stood up and stormed around the table…I thought he was going to hit me. He grabbed the painting and started to storm out of the room. And then he turned around and said, 'When will you be departing OpenAI?'"

The Aftermath

Immediate Consequences

Musk stopped regular donations to OpenAI's operating budget
Within six months, Musk left the board (February 2018)
He continued paying for shared office space with Neuralink until 2020
Musk concluded that "OpenAI is on a path of certain failure"

The Path Forward Without Musk

2019: OpenAI created a for-profit subsidiary and raised $1 billion from Microsoft
2019-2023: Raised an additional $13 billion from Microsoft
Result: OpenAI became the leading AI frontier lab
Nonprofit Assets: Over $150 billion in OpenAI equity value

Key Revelations from Brockman's Testimony

The DOTA II Turning Point

Brockman testified that when an OpenAI model defeated the top human DOTA II player, it convinced the team that compute was the key resource for powerful AI—but fundraising purely as a nonprofit would be insufficient.

The "Stealing the Nonprofit" Context

Musk's lawyers focused on Brockman's November 2017 journal entry about "stealing the non-profit." Brockman explained this referred to internal debates about whether to remove Musk from the board—which they ultimately did NOT do.

On Musk's AI Understanding

Brockman testified:

"He did not and does not know AI. We did not think he was going to spend the time required to actually get good at it."

Brockman described Musk dismissing an early demo of what would become ChatGPT, missing "that spark" that was critical to recognize.

Financial Motivations Under Scrutiny

Musk's legal team highlighted:

A journal entry where Brockman wrote: "Financially what will take me to $1B?"
Brockman's current stake is worth almost $30 billion
His failure to follow through on a promised $100,000 donation to OpenAI

The Current Legal Battle

Musk's Position

Trying to prove Altman and Brockman "stole a charity"

OpenAI's Defense

Showing that Musk had the exact same plan for control in mind

The Stakes

The trial reveals the rarely-public cutthroat negotiations between startup founders, especially significant given OpenAI's world-changing impact.

Key Takeaways

Compute as the critical resource: The DOTA II victory was the inflection point that changed OpenAI's strategy
Control vs. Mission: The fundamental disagreement was whether one person should have "full and absolute control" over OpenAI
The cost of principle: Refusing Musk's control demand cost immediate funding but ultimately led to the $14B Microsoft partnership
Personal vs. organizational wealth: Brockman's personal fortune grew to $30B while the nonprofit holds $150B+ in equity value
Recognition matters: Musk's failure to recognize ChatGPT's early potential became a defining moment in the split