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GPT-4o contributions

Language

Pre-training leads

Aidan Clark, Alex Paino, Jacob Menick

Post-training leads

Liam Fedus, Luke Metz

Architecture leads

Clemens Winter, Lia Guy

Optimization leads

Sam Schoenholz, Daniel Levy

Long-context lead

Nitish Keskar

Pre-training Data leads

Alex Carney, Alex Paino, Ian Sohl, Qiming Yuan

Tokenizer lead

Reimar Leike

Human data leads

Arka Dhar, Brydon Eastman, Mia Glaese

Eval lead

Ben Sokolowsky

Data flywheel lead

Andrew Kondrich

Inference lead

Felipe Petroski Such

Inference Productionization lead

Henrique Ponde de Oliveira Pinto

Post-training infrastructure leads

Jiayi Weng, Randall Lin, Youlong Cheng

Pre-training organization lead

Nick Ryder

Pre-training program lead

Lauren Itow

Post-training organization leads

Barret Zoph, John Schulman

Post-training program lead

Mianna Chen

Core contributors

Adam Lerer, Adam P. Goucher, Adam Perelman, Akila Welihinda, Alec Radford, Alex Borzunov, Alex Carney, Alex Chow, Alex Paino, Alex Renzin, Alex Tachard Passos, Alexi Christakis, Ali Kamali, Allison Moyer, Allison Tam, Amin Tootoonchian, Ananya Kumar, Andrej Karpathy, Andrey Mishchenko, Andrew Cann, Andrew Kondrich, Andrew Tulloch, Angela Jiang, Antoine Pelisse, Anuj Gosalia, Avi Nayak, Avital Oliver, Behrooz Ghorbani, Ben Leimberger, Ben Wang, Blake Samic, Brian Guarraci, Brydon Eastman, Camillo Lugaresi, Chak Li, Charlotte Barette, Chelsea Voss, Chong Zhang, Chris Beaumont, Chris Hallacy, Chris Koch, Christian Gibson, Christopher Hesse, Colin Wei, Daniel Kappler, Daniel Levin, Daniel Levy, David Farhi, David Mely, David Sasaki, Dimitris Tsipras, Doug Li, Duc Phong Nguyen, Duncan Findlay, Edmund Wong, Ehsan Asdar, Elizabeth Proehl, Elizabeth Yang, Eric Peterson, Eric Sigler, Eugene Brevdo, Farzad Khorasani, Francis Zhang, Gene Oden, Geoff Salmon, Hadi Salman, Haiming Bao, Heather Schmidt, Hongyu Ren, Hyung Won Chung, Ian Kivlichan, Ian O'Connell, Ian Osband, Ilya Kostrikov, Ingmar Kanitscheider, Jacob Coxon, James Crooks, James Lennon, Jason Teplitz, Jason Wei, Jason Wolfe, Jay Chen, Jeff Harris, Jiayi Weng, Jie Tang, Joanne Jang, Jonathan Ward, Jonathan McKay, Jong Wook Kim, Josh Gross, Josh Kaplan, Joy Jiao, Joyce Lee, Juntang Zhuang, Kai Fricke, Kavin Karthik, Kenny Hsu, Kiel Howe, Kyle Luther, Larry Kai, Lauren Itow, Leo Chen, Lia Guy, Lien Mamitsuka, Lilian Weng, Long Ouyang, Louis Feuvrier, Lukas Kondraciuk, Lukasz Kaiser, Lyric Doshi, Mada Aflak, Maddie Simens, Madeleine Thompson, Marat Dukhan, Marvin Zhang, Mateusz Litwin, Max Johnson, Mayank Gupta, Mia Glaese, Michael Janner, Michael Petrov, Michael Wu, Michelle Fradin, Michelle Pokrass, Miguel Oom Temudo de Castro, Mikhail Pavlov, Minal Khan, Mo Bavarian, Natalia Gimelshein, Natalie Staudacher, Nick Stathas, Nik Tezak, Nithanth Kudige, Noel Bundick, Ofir Nachum, Oleg Boiko, Oleg Murk, Olivier Godement, Owen Campbell-Moore, Philip Pronin, Philippe Tillet, Rachel Lim, Rajan Troll, Randall Lin, Rapha gontijo lopes, Raul Puri, Reah Miyara, Reimar Leike, Renaud Gaubert, Reza Zamani, Rob Honsby, Rohit Ramchandani, Rory Carmichael, Ruslan Nigmatullin, Ryan Cheu, Scott Gray, Sean Grove, Sean Metzger, Shantanu Jain, Shengjia Zhao, Sherwin Wu, Shuaiqi (Tony) Xia, Sonia Phene, Spencer Papay, Steve Coffey, Steve Lee, Steve Lee, Stewart Hall, Suchir Balaji, Tal Broda, Tal Stramer, Tarun Gogineni, Ted Sanders, Thomas Cunninghman, Thomas Dimson, Thomas Raoux, Tianhao Zheng, Tina Kim, Todd Underwood, Tristan Heywood, Valerie Qi, Vinnie Monaco, Vlad Fomenko, Weiyi Zheng, Wenda Zhou, Wojciech Zaremba, Yash Patil, Yilei, Qian, Yongjik Kim, Youlong Cheng, Yuchen He, Yuchen Zhang, Yujia Jin, Yunxing Dai, Yury Malkov

Multimodal

Multimodal lead

Prafulla Dhariwal

Post-Training Multimodal lead

Alexander Kirillov

Audio Pre-Training leads

Alexis Conneau, James Betker

Audio Post-Training leads

Alexander Kirillov, James Betker, Yu Zhang

Visual perception leads

Jamie Kiros, Rowan Zellers, Raul Puri, Jiahui Yu

Visual generation leads

James Betker, Alex Nichol, Heewoo Jun, Casey Chu, Gabriel Goh

Science leads

Gabriel Goh, Ishaan Gulrajani

Data acquisition leads

Ian Sohl, Qiming Yuan

Data infrastructure leads

Alex Paino, James Betker, Rowan Zellers, Alex Nichol

Human data lead

Arka Dhar, Mia Glaese

Encoders leads

Heewoo Jun, Alexis Conneau, Li Jing, Jamie Kiros

Decoders leads

Allan Jabri, Jong Wook Kim, James Betker

Interruptions leads

Alexis Conneau, Tao Xu, Yu Zhang

Inference lead

Tomer Kaftan

Real-time AV platform leads

Bogo Giertler, Raul Puri, Rowan Zellers, Tomer Kaftan

Front-end leads

Nacho Soto, Rocky Smith, Wayne Chang

Post-training Multimodal Infrastructure leads

Alexander Kirillov, Luke Metz, Raul Puri, Vlad Fomenko

Applied Eng lead

Jordan Sitkin

Audio manager

Christine McLeavey

Multimodal organization lead

Mark Chen

Program lead

Mianna Chen

Core contributors

Aditya Ramesh, AJ Ostrow, Allan Jabri, Alexis Conneau, Alec Radford, Alex Nichol, Avi Nayak, Avital Oliver, Benjamin Zweig, Bogo Giertler, Bowen Cheng, Brandon Walkin, Brendan Quinn, Chong Zhang, Christine McLeavey, Constantin Koumouzelis, Daniel Kappler, Doug Li, Edede Oiwoh, Farzad Khorasani, Felipe Petroski Such, Heather Schmidt, Heewoo Jun, Huiwen Chang, Ian Silber, Ishaan Gulrajani, David Carr, Haitang Hu, James Lennon, James Betker, Jamie Kiros, Jeff Harris, Jenia Varavva, Jiahui Yu, Ji Lin, Joanne Jang, Johannes Heidecke, Jong Wook Kim, Liang Zhou, Li Jing, Long Ouyang, Madelaine Boyd, Mark Hudnall, Mengchao Zhong, Mia Glaese, Nick Turley, Noah Deutsch, Noel Bundick, Ola Okelola, Olivier Godement, Owen Campbell-Moore, Peter Bak, Peter Bakkum, Raul Puri, Rowan Zellers, Saachi Jain, Shantanu Jain, Shirong Wu, Spencer Papay, Tao Xu, Valerie Qi, Wesam Manassra, Yu Zhang

Platform

Data Systems lead

Andrew Tulloch

Model distribution leads

Amin Tootoochian, Miguel Castro

ML leads

Nik Tezak, Christopher Hesse

Runtime lead

Ian O’Connell

Systems lead

Jason Teplitz

Kernels lead

Phil Tillet

Hardware health leads

Reza Zamani & Michael Petrov

Supercomputing leads

Rory Carmichael & Christian Gibson

Preparedness, Safety, Policy

Safety lead

Johannes Heidecke

Audio safety lead

Saachi Jain

Preparedness lead

Tejal Patwardhan

Red-teaming lead

Troy Peterson

Core contributors

Alex Beutel, Andrea Vallone, Angela Jiang, Carroll Wainwright, Chong Zhang, Chris Beaumont, Claudia Fischer, Evan Mays, Filippo Raso, Haoyu Wang, Ian Kivlichan, Jason Phang, Jieqi Yu, Joel Parish, Joshua Achiam, Jonathan Uesato, Joost Huizinga, Josh Snyder, Justyn Harriman, Katy Shi, Keren Gu-Lemberg, Kevin Liu, Lama Ahmad, Lilian Weng, Madelaine Boyd, Meghan Shah, Mehmet Yatbaz, Michael Lampe, Miles Wang, Molly Lin, Natalie Cone, Neil Chowdhury, Olivia Watkins, Owen Campbell-Moore, Peter Dolan, Rachel Dias, Rahul Arora, Saachi Jain, Sam Toizer, Sandhini Agarwal, Todor Markov

Model Launch and Deployment

Lead

Mianna Chen

Additional contributions

Additional Leadership

Aleksander Mądry, Barret Zoph, Bob McGrew, Brad Lightcap, David Farhi, Greg Brockman, Hannah Wong, Ilya Sutskever, Jakub Pachocki, Jan Leike, Jason Kwon, John Schulman, Jonathan Lachman, Krithika Muthukumar, Lilian Weng, Mark Chen, Miles Brundage, Mira Murati, Nick Ryder, Peter Deng, Peter Welinder, Sam Altman, Srinivas Narayanan, Tal Broda

Legal

Alan Hayes, Ashley Pantuliano, Bright Kellogg, Fred von Lohmann, Filippo Raso, Heather Whitney, Tom Rubin

Blog post authorship

Aidan Clark, Alex Baker-Whitcomb, Alex Carney, Alex Nichol, Alexander Kirillov, Alex Paino, Alexis Conneau, Allan Jabri, Anuj Gosalia, Barret Zoph, Ben Sokolowsky, Bogo Giertler, Bowen Cheng, Cheng Lu, Christine McLeavey, Coley Czarnecki, Daniel Kappler, Elizabeth Yang, Eric Antonow, Eric Wallace, Filippo Raso, Gabriel Goh, Greg Brockman, Hannah Wong, Heewoo Jun, Hendrik Kirchner, Jacob Menick, James Betker, James Betker, Jamie Kiros, Jason Kwon, Jeff Harris, Ji Lin, Jiahui Yu, Johannes Heidecke, John Schulman, Jonathan McKay, Jong Wook Kim, Jordan Sitkin, Kendra Rimbach, Kevin Liu, Krithika Muthukumar, Leher Pathak, Liam Fedus, Lilian Weng, Lindsay McCallum, Luke Metz, Mark Chen, Maya Shetty, Mianna Chen, Michael Lampe, Michael Wu, Michelle Pokrass, Mira Murati, Nacho Soto, Natalie Summers, Niko Felix, Olivier Godement, Owen Campbell-Moore, Peter Deng, Prafulla Dhariwal, Reimar Leike, Rocky Smith, Rowan Zellers, Saachi Jain, Sandhini Agarwal, Sam Toizer, Sean Grove, Shantanu Jain, Tao Xu, Tejal Patwardhan, Tomer Kaftan, Tom Stasi, Troy Peterson, Veit Moeller, Vinnie Monaco, Wayne Chang, Yu Zhang, Yuchen He

Demo content + production

Alex Baker-Whitcomb, Avi Nayak, Barret Zoph, Bobby Spero, Bogo Giertler, Brendan Quinn, Chad Nelson, Charlotte Barette, Claudia Fischer, Coley Czarnecki, Colin Jarvis, Eric Antonow, Filippo Raso, Greg Brockman, James Betker, Jessica Shieh, Joe Beutler, Joe Landers, Krithika Muthukumar, Leher Pathak, Lindsay McCallum, Mark Chen, Mianna Chen, Michael Petrov, Mira Murati, Natalie Summers, Peter Deng, Ricky Wang, Rocky Smith, Rohan Sahai, Romain Huet, Rowan Zellers, Scott Ethersmith, Toki Sherbakov, Tomer Kaftan, Veit Moeller, Wayne Chang

Communications + Marketing

Alex Baker-Whitcomb, Andrew Galu, Angela Baek, Coley Czarnecki, Dev Valladares, Eric Antonow, Hannah Wong, Leher Pathak, Lindsay McCallum, Lindsey Held, Krithika Muthukumar, Kendra Rimbach, Maya Shetty, Niko Felix, Roy Chen , Ruby Chen, Taya Christianson, Thomas Degry, Veit Moeller

Resource Allocation & Problem Solving

Bob McGrew, Lauren Itow, Mianna Chen, Nik Tezak, Peter Hoeschele, Tal Broda

Inference Compute

Andrew Codispoti, Brian Hsu, Channing Conger, Ikai Lan, Jos Kraaijeveld, Kai Hayashi, Kenny Nguyen, Lu Zhang, Natan LaFontaine, Pavel Belov, Peng Su, Vishal Kuo, Will Sheu

Security and privacy

Kevin Button, Paul McMillan, Shino Jomoto, Thomas Shadwell, Vinnie Monaco 

GTM, Pricing, Finance

Andrew Braunstein, Anuj Gosalia, Denny Jin, Eric Kramer, Jeff Harris, Jessica Shieh, Joe Beutler, Joe Landers, Lauren Workman, Rob Donnelly,  Romain Huet, Shamez Hermani, Toki Sherbakov

We also acknowledge and thank every OpenAI team member not explicitly mentioned above, including the amazing people on the executive assistant, finance, go to market, human resources, legal, operations and recruiting teams. From hiring everyone in the company, to making sure we have an amazing office space, to building the administrative, HR, legal, and financial structures that allow us to do our best work, everyone at OpenAI has contributed to GPT-4o.

We thank Microsoft for their partnership, especially Microsoft Azure for supporting model training with infrastructure design and management, and the Microsoft Bing team and Microsoft's safety teams for their partnership on safe deployment.

We are grateful to our expert adversarial testers and red teamers who helped test our models at early stages of development and informed our risk assessments as well as the system card. Participation in this red teaming process is not an endorsement of the deployment plans of OpenAI or OpenAI’s policies.

*Contributors listed in alphabetized order