The most important AI trial in history just detonated. Ilya Sutskever — OpenAI co-founder, former chief scientist, and one of the most respected minds in artificial intelligence — took the stand in an Oakland courtroom on Monday and delivered sworn testimony that should make every OpenAI investor lose sleep.

He spent a year building a 52-page dossier documenting what he called Sam Altman’s “consistent pattern of lying.”

Not rumors. Not anonymous tips. Sworn testimony from the man who helped build the technology behind ChatGPT.

The 52-Page Case File

The November 2023 board coup that briefly fired Altman wasn’t a snap decision. It was the end product of at least twelve months of methodical documentation.

Sutskever prepared his 52-page report at the board’s request, cataloging Altman’s alleged dishonesty. The core accusation: Altman engaged in “undermining and pitting executives against one another” — behavior Sutskever described as “not conducive to any grand goal,” including OpenAI’s stated mission of safely building AGI.

He confirmed he’d discussed removing Altman with then-CTO Mira Murati over an extended period before they pulled the trigger. This was premeditated.

“You told the board that Altman ’exhibits a consistent pattern of lying, undermining his execs and pitting his execs against one another,’” Musk’s lawyer asked him directly.

“Yes,” Sutskever replied.

Everyone Who Worked With Altman Is Saying the Same Thing

Sutskever’s testimony slots into a growing pattern. Former allies are lining up to say roughly the same thing under oath:

Mira Murati testified via video that Altman had a pattern of “saying one thing to one person and completely the opposite to another person” and accused him of “creating chaos.”

Helen Toner, former board member, described a “pattern of behavior related to his honesty and candor.”

Natasha McCauley, another former board member, alleged Altman caused “repeated crisis events” through his leadership.

Text messages shown in court captured the chaos of November 2023. Altman texted Murati asking about his chances of reinstatement: “Can you indicate directionally good or bad?” Her reply: “Directionally very bad.”

He was back within five days anyway. But the testimony reveals just how close OpenAI came to a completely different future.

The $7 Billion Witness

Sutskever confirmed his OpenAI stake is currently worth roughly $7 billion. He’s the second OpenAI billionaire revealed during the trial — Greg Brockman disclosed a nearly $30 billion stake last week.

Google once offered Sutskever $6 million per year to stay. He left to co-found OpenAI. That bet paid off about a thousand-fold.

The trial has also illuminated the extraordinary “OpenAI mafia” — former employees who left to build billion-dollar competitors. Dario and Daniela Amodei founded Anthropic (reportedly approaching a $1 trillion valuation). Murati launched Thinking Machines Lab ($12 billion valuation). Aravind Srinivas co-founded Perplexity ($20 billion). Sutskever himself started Safe Superintelligence, now at $32 billion.

The talent that built OpenAI has scattered across the industry — and they’re building the competition.

Nadella: “Amateur City”

Microsoft CEO Satya Nadella also took the stand Monday and was characteristically blunt about the board that tried to fire Altman.

“Whenever I’ve asked explicitly why Sam was fired, they never gave me, that I remember, a specific reason,” he testified. “It was sort of amateur-city as far as I’m concerned.”

The irony is thick. Nadella essentially validated that the board had legitimate concerns about Altman’s honesty while criticizing them for botching the execution. Microsoft, with billions invested in OpenAI, was scrambling to contain the fallout — even proposing to absorb Altman and other employees into a new subsidiary.

The Anthropic Merger Nobody Knew About

Here’s the bombshell that hasn’t gotten enough attention: after Altman’s ouster, OpenAI’s remaining board members actually met with Anthropic about a potential merger. The Claude chatbot maker would have essentially taken over OpenAI’s leadership.

Sutskever said he was “not excited” about the idea. But picture that alternate timeline — Anthropic-OpenAI combined, Dario Amodei at the helm, controlling both ChatGPT and Claude. The entire AI industry would look different today.

What’s Really at Stake

Musk is seeking $150 billion in damages, the removal of Altman and Brockman, and the reversal of OpenAI’s for-profit conversion. Closing arguments are set for Thursday.

But the bigger question the trial forces us to confront: Should the person leading humanity’s most powerful technology be someone his own co-founder spent a year documenting as dishonest?

Sutskever isn’t Team Musk here — he testified that “the mission of OpenAI is larger than its nonprofit or for-profit structure” and that he made no promise to Musk about OpenAI remaining nonprofit. But his testimony about Altman’s character carries enormous weight precisely because he has no obvious axe to grind in this particular fight.

Altman is expected to take the stand as soon as Tuesday. His response — under oath — could be one of the most consequential moments in AI industry history.

This isn’t over.

Sources: The Guardian, Reuters, Forbes, Benzinga