Five Days That Shook AI

On Friday, 17 November 2023, OpenAI, the company behind ChatGPT and the hottest startup in the world, announced that its board had fired CEO Sam Altman. There was no scandal in the news, no failed product, no warning. ChatGPT had just turned a year old.

By the following Tuesday night, Altman was coming back, most of the board was leaving, and nearly the entire company had threatened to quit. Here's what happened, why it happened, and what changed.

🎯 Quick Answer (30-Second Read)

  • 17 Nov 2023: OpenAI's board removed Altman, saying he "was not consistently candid in his communications with the board." CTO Mira Murati became interim CEO. President Greg Brockman was removed as board chair and quit.
  • 19–20 Nov: former Twitch CEO Emmett Shear was named interim CEO. Microsoft said Altman and Brockman would join it to lead a new AI team.
  • 20 Nov: hundreds of employees (reports ranged from about 500 to over 700 of roughly 770) signed a letter threatening to quit unless the board resigned and reinstated Altman.
  • 21–22 Nov: Altman agreed to return with a new initial board: Bret Taylor (chair), Larry Summers and Adam D'Angelo.
  • March 2024: an outside review by law firm WilmerHale found a breakdown in trust, said his conduct "did not mandate removal," and Altman rejoined the board.

Why OpenAI's Board Could Do This

OpenAI had an unusual structure. A nonprofit board controlled a capped-profit company that took billions from investors like Microsoft. The board's duty was to OpenAI's mission (safe AI that benefits humanity), not to investors.

flowchart TB NP["OpenAI nonprofit board
duty: the mission"] --> GP["Controls the for-profit arm"] GP --> LP["Capped-profit company
(ChatGPT, API, staff)"] MS["Microsoft
major investor"] -.->|"investment, no board seat"| LP EMP["Employees
equity in for-profit"] --> LP

At the time of the firing, the board had six members: Altman, Brockman, chief scientist Ilya Sutskever, Quora CEO Adam D'Angelo, technologist Tasha McCauley and researcher Helen Toner. Four of them (all except Altman and Brockman) voted to remove him. Microsoft, despite its huge investment, had no board seat and reportedly learned of the decision only minutes before the announcement.

The Timeline

timeline title Five days at OpenAI, November 2023 Fri 17 Nov : Board fires Altman : Murati named interim CEO : Brockman quits Sat-Sun 18-19 Nov : Talks about Altman returning : Emmett Shear named interim CEO Mon 20 Nov : Microsoft says Altman and Brockman will join it : Staff letter threatens mass resignation : Sutskever says he regrets his part Tue 21 Nov : Deal for Altman to return : New board - Taylor, Summers, D'Angelo

Friday: the firing

The board's blog post said Altman "was not consistently candid in his communications with the board, hindering its ability to exercise its responsibilities," and that it "no longer has confidence in his ability to continue leading OpenAI." It gave no specific examples. Brockman was removed as chair and resigned hours later, and several senior researchers followed.

The weekend: pressure builds

Investors and employees pushed for Altman's return, and talks happened over the weekend. They failed at first, and late on Sunday the board named Emmett Shear, the former CEO of Twitch, as interim CEO, OpenAI's third CEO in three days.

Monday: the revolt

Microsoft CEO Satya Nadella announced that Altman and Brockman would join Microsoft to lead a new advanced AI research team. Then OpenAI staff published a letter to the board saying they might resign and join Microsoft unless the board stepped down and brought Altman back. The number of signatures grew through the day; reports put it at anywhere from about 500 to more than 700 of roughly 770 employees.

In a twist, Ilya Sutskever, one of the board members who voted to fire Altman, posted that he "deeply regret[ted]" his participation in the board's actions.

Tuesday: the return

Late on 21 November, OpenAI announced that Altman would return as CEO with a new initial board of Bret Taylor (chair), Larry Summers and Adam D'Angelo, the only member of the old board to stay. Microsoft later got a non-voting observer seat.

Key takeaway: the board had the legal power to fire the CEO, but power on paper meant little when almost every employee and the biggest investor were ready to follow him out the door. A company's real leverage sits with the people who do the work.

Why Did the Board Do It?

The board never gave a detailed public explanation at the time. What came out later:

  • The independent review (March 2024): OpenAI's special committee hired WilmerHale, which interviewed dozens of people and reviewed over 30,000 documents. It found "a breakdown in trust between the prior Board and Mr. Altman," said the board acted within its "broad discretion," but concluded that his conduct "did not mandate removal." It also found the board hadn't anticipated how much the firing would destabilise the company.
  • Former board members' accounts: in 2024, Helen Toner said publicly that the board had lost trust in Altman over a pattern of withholding or misrepresenting information. Altman and OpenAI's new board disputed that characterisation.
  • Safety vs speed: commentary at the time also pointed to tension between moving fast on products and the board's safety mission. The review did not say product safety or finances were the reason.

After the review, OpenAI said it had "full confidence" in Altman and Brockman, Altman rejoined the board, and three new directors were added: Sue Desmond-Hellmann, Nicole Seligman and Fidji Simo. OpenAI also announced new governance guidelines, a whistleblower hotline and a stronger conflict-of-interest policy.

What Changed Afterwards

Before (Nov 2023) After
Small board, mostly independent researchers Larger board with business and governance experience
Microsoft had no board role Microsoft got an observer seat (later given up in 2024)
CEO could be removed with little warning New governance guidelines and an outside review
Altman off the board after firing Altman back on the board from March 2024

Several of the people involved later left OpenAI, including Sutskever, who departed in May 2024 to start his own company, Safe Superintelligence, and Murati, who left in September 2024.

Lessons

  • Governance matters most in a crisis. OpenAI's structure looked fine until it was tested.
  • Explain big decisions. The board's vague statement left a vacuum that employees, investors and the press filled.
  • Plan for the reaction. The review found the board hadn't anticipated the instability its decision would cause.
  • Talent is leverage. The employee letter changed the outcome in under 72 hours.

(For more on OpenAI's strategy, see How OpenAI Turned Its API Into the Fastest-Growing Developer Ecosystem and The Real Reason OpenAI Has Free Tiers.)

Frequently Asked Questions

Why was Sam Altman fired from OpenAI?

OpenAI's board said in November 2023 that Altman "was not consistently candid in his communications with the board." A later review by law firm WilmerHale found a breakdown in trust between the board and Altman, but concluded his conduct did not require his removal.

How long was Sam Altman gone from OpenAI?

About five days. He was fired on 17 November 2023, and on 21 November OpenAI announced an agreement for him to return as CEO with a new initial board. He rejoined the board itself in March 2024 after the outside review.

Who was on the OpenAI board that fired Sam Altman?

The four board members who removed him were Ilya Sutskever, Adam D'Angelo, Tasha McCauley and Helen Toner. Altman and Greg Brockman were the other two members. Only D'Angelo remained on the new board formed when Altman returned.

Conclusion

In five days, OpenAI's board fired its CEO, named two interim CEOs, watched almost the entire company threaten to leave for Microsoft, and agreed to bring Altman back under a new board. An independent review later blamed a breakdown in trust rather than misconduct requiring removal. It remains one of the clearest examples of what happens when a company's governance structure collides with where its real power lies.

Sources

Last verified: 2 November 2026.

Related reads: How OpenAI Turned Its API Into a Developer Ecosystem · The Real Reason OpenAI Has Free Tiers · Why Elon Musk Fired 80% of Twitter

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