Who is behind OpenAI?
Shows documented founders, leaders, board members, funders and owners.
Not who made decisions, or why.
A connection is not evidence of wrongdoing.
- Board Elon Musk (co-chair) Dec 2015 – Feb 2018
- Money in Elon Musk (donor, $44M) 2016 – Sep 2020
- Board Greg Brockman Feb 2018 – 17 Nov 2023
- Board Ilya Sutskever Feb 2018 – 29 Nov 2023
- Board Adam D'Angelo Mar 2019 –
- Led by Greg Brockman Mar 2019 – 17 Nov 2023
- Led by Sam Altman Mar 2019 – 17 Nov 2023
- Led by Bret Taylor 29 Nov 2023 –
- Led by Sam Altman 29 Nov 2023 –
- Owners Microsoft (27%, as of 31 Dec 2025) Oct 2025 –
On the record
Sourced links that no one presents as their own account, as recorded so far. Others may exist.
Founded by
- Elon Musk founded Dec 2015 co-chair Primary record 1
- Greg Brockman founded Dec 2015 CTO Primary record 1
- Ilya Sutskever founded Dec 2015 research director Primary record 1
- Sam Altman founded Dec 2015 co-chair Primary record 123
Led by
- Greg Brockman chair of Mar 2019 – 17 Nov 2023 Primary record 24
- Sam Altman CEO of Mar 2019 – 17 Nov 2023 Primary record 24
- Mira Murati head of 17 Nov 2023 interim CEO Primary record 2
- Bret Taylor chair of 29 Nov 2023 – Primary record 56
- Sam Altman CEO of 29 Nov 2023 – Primary record 5
Board
- Elon Musk board member of Dec 2015 – Feb 2018 co-chair Primary record 147
- Greg Brockman board member of Feb 2018 – 17 Nov 2023 Primary record 267
- Ilya Sutskever board member of Feb 2018 – 29 Nov 2023 Primary record 57
- Adam D'Angelo board member of Mar 2019 – Primary record 456
- Reid Hoffman board member of Mar 2019 Primary record 4
- Larry Summers board member of 29 Nov 2023 Primary record 56
- Fidji Simo board member of 8 Mar 2024 Primary record 6
- Nicole Seligman board member of 8 Mar 2024 Primary record 6
Money in
- Amazon funded Dec 2015 donor, through Amazon Web Services (AWS) Primary record 1
-
Elon Musk
funded
Dec 2015
donor
Primary record
1
One of the launch donors; together they committed $1 billion. A pledge, not money received; amounts per donor were not given.
- Greg Brockman funded Dec 2015 donor Primary record 1
- Infosys funded Dec 2015 donor Primary record 1
- Jessica Livingston funded Dec 2015 donor Primary record 1
- Peter Thiel funded Dec 2015 donor Primary record 1
- Reid Hoffman funded Dec 2015 donor Primary record 1
-
Elon Musk
funded
2016 – Sep 2020
donor, $44M
Primary record
89
Musk's lawsuit says more than $44 million; OpenAI says less than $45 million. Both put it at about $44 million.
Owners
Going further
Proof 11 sources
-
Introducing OpenAI, OpenAI, 11 Dec 2015.
Primary record
OpenAI's co-chairs are Sam Altman and Elon Musk.
OpenAI's research director is Ilya Sutskever, one of the world experts in machine learning. Our CTO is Greg Brockman, formerly the CTO of Stripe. The group's other founding members are world-class research engineers and scientists:
Sam, Greg, Elon, Reid Hoffman, Jessica Livingston, Peter Thiel, Amazon Web Services (AWS), Infosys, and YC Research are donating to support OpenAI. In total, these funders have committed $1 billion, although we expect to only spend a tiny fraction of this in the next few years.
-
OpenAI announces leadership transition, OpenAI, 17 Nov 2023.
Primary record
We are grateful for Sam’s many contributions to the founding and growth of OpenAI.
As a part of this transition, Greg Brockman will be stepping down as chairman of the board and will remain in his role at the company, reporting to the CEO.
The board of directors of OpenAI, Inc., the 501(c)(3) that acts as the overall governing body for all OpenAI activities, today announced that Sam Altman will depart as CEO and leave the board of directors.
Mira Murati, the company’s chief technology officer, will serve as interim CEO, effective immediately.
OpenAI’s board of directors consists of OpenAI chief scientist Ilya Sutskever, independent directors Quora CEO Adam D’Angelo, technology entrepreneur Tasha McCauley, and Georgetown Center for Security and Emerging Technology’s Helen Toner.
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Testimony of Sam Altman, Co-Founder and CEO, OpenAI: Winning the AI Race (Senate Commerce Committee), U.S. Senate Committee on Commerce, Science, and Transportation, 8 May 2025.
Primary record
Testimony of Sam Altman, Co-Founder and CEO, OpenAI
-
OpenAI LP, OpenAI, 11 Mar 2019.
Primary record
OpenAI Nonprofit’s board consists of OpenAI LP employees Greg Brockman (Chairman & CTO), Ilya Sutskever (Chief Scientist), and Sam Altman (CEO), and non-employees Adam D’Angelo, Holden Karnofsky, Reid Hoffman
Elon Musk left the board of OpenAI Nonprofit in February 2018 and is not formally involved with OpenAI LP.
-
Sam Altman returns as CEO, OpenAI has a new initial board, OpenAI, 29 Nov 2023.
Primary record
I am returning to OpenAI as CEO. Mira will return to her role as CTO. The new initial board will consist of Bret Taylor (Chair), Larry Summers, and Adam D’Angelo.
While Ilya will no longer serve on the board, we hope to continue our working relationship and are discussing how he can continue his work at OpenAI.
-
Review completed & Altman, Brockman to continue to lead OpenAI, OpenAI, 8 Mar 2024.
Primary record
“We have unanimously concluded that Sam and Greg are the right leaders for OpenAI,” stated Bret Taylor, Chair of the OpenAI Board.
On December 8, 2023, the Special Committee retained WilmerHale to conduct a review of the events concerning the November 17, 2023 removal of Sam Altman and Greg Brockman from the OpenAI Board of Directors and Mr. Altman’s termination as CEO.
They will work closely with current board members Adam D’Angelo, Larry Summers and Bret Taylor as well as Greg, Sam, and OpenAI’s senior management.
Fidji Simo, CEO and Chair of Instacart and on the Board of Directors at Shopify
As Chair of the Board, I am excited to welcome Sue, Nicole, and Fidji to the OpenAI Board of Directors.
Nicole Seligman, former EVP and Global General Counsel of Sony and President of Sony Entertainment and on the Board of Directors at Paramount Global, Meira GTx, and Intuitive Machines, Inc.
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OpenAI Supporters, OpenAI, 20 Feb 2018.
Primary record
Additionally, Elon Musk will depart the OpenAI Board but will continue to donate and advise the organization.
The Board is now Greg Brockman, Ilya Sutskever, Holden Karnofsky, and Sam Altman.
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Complaint, Musk v. Altman, No. 3:24-cv-04722 (N.D. Cal.), U.S. District Court for the Northern District of California, 5 Aug 2024.
Primary record
All told, Musk contributed more than $44 million to OpenAI, Inc. in its first five critical years.
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OpenAI and Elon Musk, OpenAI, 5 Mar 2024.
Primary record
Elon said we should announce an initial $1B funding commitment to OpenAI. In total, the non-profit has raised less than $45M from Elon and more than $90M from other donors.
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Microsoft Corporation Form 10-Q, quarter ended December 31, 2025, Microsoft, 28 Jan 2026.
Primary record
We have an investment of approximately 27 percent of OpenAI on an as-converted basis accounted for under the equity method of accounting.
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The next chapter of the Microsoft–OpenAI partnership, Microsoft, 28 Oct 2025.
Primary record
Following the recapitalization, Microsoft holds an investment in OpenAI Group PBC valued at approximately $135 billion, representing roughly 27 percent on an as-converted diluted basis, inclusive of all owners – employees, investors, and the OpenAI Foundation.
How this answer is built
Lines on the record come first: sourced links that no one presents as their own account, each with its strongest source. Then every account recorded here gets its own column, A to Z, none ranked above another. A column quotes only that account's own words and shows the strength of its own sources. Disputed lines are listed apart, with the reason, and lines still being verified come last. Neither is counted. Withdrawn lines are never shown.
When a list is longer than the page shows, the links the public methodology ranks strongest stay (methodology 0.3), and the rest open in the explorer.
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