Information for Thinking Machines

Table of contents

Basic information

Item Value
Donations List Website (data still preliminary)

Positions count by year

Hover over a name to see the position and date range. This table only includes positions where at least the start date is known. The positions count can count the same person multiple times if they held different positions; similarly, the list of staff may include the same person multiple times if they held more than one position during a single year. For each year, a person is included if they were at the organization for any part of the year; this means the actual staff count at any point during the year can be lower (or higher, if some staff held multiple positions in a single year).

Year Positions count Researchers General staff Associates Board members Advisors
2024 5 Barret Zoph, Jonathan Lachman, Mira Murati, Myle Ott, Pia Santos
2025 41 Brydon Eastman Alex Gartrell, Alexander Kirillov, Andrew Gu, Andrew Tulloch, Barret Zoph, Chih-Kuan Yeh, Christian Gibson, Devendra Chaplot, Horace He, Ian O"Connell, Jacob Menick, John Schulman, Jonathan Lachman, Joshua Gross, Kevin Button, Kurt Shuster, Kyle Luther, Lilian Weng, Luke Metz, Mario Saltarelli, Mark Jen, Mianna Chen, Mira Murati, Myle Ott, Naman Goyal, Nikki Sommer, Noah Shpak, Pia Santos, Randall Lin, Rowan Zellers, Sam Schoenholz, Sam Shleifer, Saurabh Garg, Shaojie Bai, Stephen Chen, Stephen Roller, Yifu Wang, Yinghai Lu Alec Radford, Bob McGrew

Number of full-time staff at the beginning each year

The following table lists some dates and people who were at the organization on the given date (namely, the start of the year). The table may not list every person who worked for the organization (e.g. they could have joined and left in the middle of a single year). This table excludes associates, interns, advisors, and board members.

Date Staff count Staff
2025-01-01 11 Alexander Kirillov, Andrew Tulloch, Barret Zoph, Jonathan Lachman, Lilian Weng, Mario Saltarelli, Mira Murati, Myle Ott, Noah Shpak, Pia Santos, Sam Shleifer

Full history of additions and subtractions

This table shows the full change history of positions. Each row corresponds to at least one addition or removal of a position. Additions are in green and subtractions are in red. If a position name changed, it is listed simultaneously as an addition (of the new name) and removal (of the old name) and colored yellow. Additionally there are faded variants of each color for visited links.

Date Number of positions Number of positions added Number of positions removed Positions added Positions removed
2024-10-01 1 1 0 Barret Zoph
2024-12-01 5 4 0 Jonathan Lachman, Mira Murati, Myle Ott, Pia Santos
2025-01-01 11 6 0 Alexander Kirillov, Andrew Tulloch, Lilian Weng, Mario Saltarelli, Noah Shpak, Sam Shleifer
2025-02-01 30 19 0 Alex Gartrell, Brydon Eastman, Chih-Kuan Yeh, Christian Gibson, Devendra Chaplot, Ian O"Connell, Jacob Menick, John Schulman, Joshua Gross, Kurt Shuster, Kyle Luther, Luke Metz, Nikki Sommer, Randall Lin, Rowan Zellers, Sam Schoenholz, Stephen Chen, Stephen Roller, Yinghai Lu
2025-02-28 29 0 -1 Stephen Chen
2025-03-01 40 11 0 Alec Radford, Andrew Gu, Bob McGrew, Horace He, Kevin Button, Mark Jen, Mianna Chen, Naman Goyal, Saurabh Garg, Shaojie Bai, Yifu Wang

List of people (41 positions)

Person Title Start date End date AI safety relation Subject Employment type Source Notes
Alex Gartrell Member of Technical Staff 2025-02-01 [1], [2], [3]
Alexander Kirillov Member of Technical Staff 2025-01-01 full-time [1], [4], [3]
Andrew Gu Member of Technical Staff 2025-03-01 [5], [3]
Andrew Tulloch Chief Architect 2025-01-01 [1], [6], [3]
Barret Zoph Chief Technology Officer 2024-10-01 full-time [1], [7], [3]
Brydon Eastman Researcher 2025-02-01 [1], [8], [3]
Chih-Kuan Yeh Member of Technical Staff 2025-02-01 [9], [10], [3]
Christian Gibson Member of Technical Staff 2025-02-01 [1], [3]
Devendra Chaplot Member of Technical Staff 2025-02-01 full-time [1], [11], [3]
Horace He Member of Technical Staff 2025-03-01 [5], [3]
Ian O"Connell Member of Technical Staff 2025-02-01 [1], [12], [3]
Jacob Menick Member of Technical Staff 2025-02-01 full-time [1], [13], [3]
John Schulman Chief Scientist 2025-02-01 [1], [3]
Jonathan Lachman Founding Head of Operations 2024-12-01 full-time [1], [14], [3]
Joshua Gross Member of Technical Staff 2025-02-01 full-time [1], [15], [3]
Kevin Button Member of Technical Staff 2025-03-01 [3]
Kurt Shuster Member of Technical Staff 2025-02-01 full-time [1], [16], [3]
Kyle Luther Member of Technical Staff 2025-02-01 [1], [17], [3]
Lilian Weng Member of Technical Staff 2025-01-01 full-time [1], [18], [3]
Luke Metz Member of Technical Staff 2025-02-01 [1], [3]
Mario Saltarelli Member of Technical Staff 2025-01-01 full-time [1], [19], [3]
Mark Jen Member of Technical Staff 2025-03-01 full-time [20], [3]
Mianna Chen Member of Technical Staff 2025-03-01 [5], [3]
Mira Murati Chief Executive Officer 2024-12-01 [1], [21], [3]
Myle Ott Chief Executive Officer 2024-12-01 full-time [1], [22], [3]
Naman Goyal Member of Technical Staff 2025-03-01 [5], [23], [3]
Nikki Sommer Head of HR 2025-02-01 full-time [1], [24], [3]
Noah Shpak Member of Technical Staff 2025-01-01 full-time [1], [25], [3]
Pia Santos Founding Team, Executive Operations 2024-12-01 full-time [1], [26], [3]
Randall Lin Member of Technical Staff 2025-02-01 [1], [3]
Rowan Zellers Member of Technical Staff 2025-02-01 [1], [27], [3]
Sam Schoenholz Member of Technical Staff 2025-02-01 [1], [3]
Sam Shleifer Member of Technical Staff 2025-01-01 full-time [1], [28], [3]
Saurabh Garg Member of Technical Staff 2025-03-01 full-time [5], [29], [3]
Shaojie Bai Member of Technical Staff 2025-03-01 full-time [30], [3]
Stephen Roller Member of Technical Staff 2025-02-01 full-time [1], [31], [3]
Yifu Wang Member of Technical Staff 2025-03-01 [9], [3]
Yinghai Lu Member of Technical Staff 2025-02-01 full-time [1], [32], [3]
Alec Radford Advisor 2025-03-01 advisor [9], [3]
Bob McGrew Advisor 2025-03-01 advisor [9], [3]
Stephen Chen Member of Technical Staff 2025-02-01 2025-02-28 [1], [33]

Products (0 products)

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Organization documents (0 documents)

Title Publication date Author Publisher Affected organizations Affected people Document scope Cause area Notes

Documents (0 documents)

Title Publication date Author Publisher Affected organizations Affected people Affected agendas Notes

Similar organizations

Organization Number of people in common List of people in common
OpenAI 7 Brydon Eastman, John Schulman, Lilian Weng, Mario Saltarelli, Mira Murati, Alec Radford, Bob McGrew