The messiest divorce in AI history started with whiskey poured by Amber Heard at a haunted mansion and ended with compute costs ballooning from $30 million to $50 billion.
The Summary
- Greg Brockman testified that Musk went from celebratory host pouring whiskey at his Bay Area mansion in summer 2017 to "storming around the table" demanding 51% control of OpenAI days later
- OpenAI's compute costs exploded from $30 million in 2017 to $50 billion in 2026, revealing the scale mismatch between Musk's early funding and the company's trajectory
- Musk demanded a "big win" before any for-profit conversion, got it with the Dota 2 victory in 2017, then walked away in a control fight anyway
- The trial is now livestreamed on YouTube (audio only), making the $134 billion dispute over AI's future accessible to anyone with an internet connection
The Signal
The details matter because they show exactly when the dream died. In summer 2017, Amber Heard poured whiskey for OpenAI's cofounders at what Brockman called Musk's "haunted mansion" in the Bay Area. They were celebrating OpenAI's Dota 2 win, where 20,000 people watched an AI bot defeat a top player on an international stage. Musk crowed about it on Twitter. This was the "big result" he'd told the team they needed before entertaining any for-profit structure.
Days later, same people, different room. Musk stood up and "stormed around the table," demanding 51% control of the company. Brockman described "Jekyll and Hyde-level swings" from happy host to "tantrum-throwing control freak." The founders resisted. Musk walked.
"He stood up, and he kind of stormed around the table."
What actually broke wasn't ego or vision. It was math. Brockman revealed OpenAI's compute costs grew from $30 million in 2017 to $50 billion in 2026. That's a 1,666x increase in nine years. Musk contributed $38 million total, then left in 2018. By 2026, OpenAI was spending more in compute every three days than Musk ever donated. The numbers tell you why the nonprofit structure couldn't survive contact with AGI-scale infrastructure costs.
The ghost haunting this trial isn't in Musk's mansion. It's Demis Hassabis, the Google DeepMind CEO who's been "hovering around the margins" of testimony all week. Multiple sources confirm Hassabis "lived rent-free in Elon Musk's head" during the OpenAI years. He sold DeepMind to Google for up to $650 million in 2014, then proceeded to rack up wins like AlphaFold while OpenAI was still figuring out Dota 2. The competitive pressure from Google's war chest and Hassabis's technical credibility is the context for every demand Musk made.
The courtroom drama has its own subplot: William Savitt, Altman's lead attorney, already beat Musk once in the Twitter acquisition case. He's the mild-mannered Wachtell partner who forced Musk to buy the platform in 2022. Now he's arguing Musk's real goal is to "dismantle OpenAI in an attempt to boost xAI," Musk's own AI company founded in 2023. Musk's only expert witness is Stuart Russell, the AI safety researcher who thinks governments need to restrain frontier labs. It's a thin bench for a $134 billion case.
Meanwhile, Sam Altman invited Musk to OpenAI's GPT-5.5 launch party on May 5, saying "he could come if he wants to" and "the world needs more love." This after Musk sent "ominous texts" to Brockman and Altman saying they'd "be the most hated men in America." The judge already warned both to "control your propensity to use social media to make things worse."
The Implication
Watch the compute cost trajectory. If Brockman's numbers are accurate, OpenAI is spending more on training runs than most countries spend on their militaries. The nonprofit-to-for-profit conversion wasn't betrayal. It was survival. Anyone building agents at scale faces the same math: foundation models cost billions, and donation models don't work past the demo stage.
The real tell is who's testifying next. Shivon Zilis, Neuralink's director and mother of four of Musk's children, joined Musk as a plaintiff and had a front-row seat to the 2016-2019 split. She left OpenAI to help Musk found xAI in 2023. If her testimony backs Brockman's "Jekyll and Hyde" characterization, Musk's case weakens. If she corroborates deception, Altman's $134 billion problem gets real. Either way, the power law of compute costs means this dispute is footnote. The real question is who can keep paying the bills long enough to ship AGI.