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OpenAI o3 and o4-mini System Card

Reasoning Models

OpenAIUndated16 researchers
Field
Reasoning Models
Organization
OpenAI
arXiv
2504.21798

Canonical link

https://arxiv.org/abs/2504.21798

Connected researchers

Profile Reports

Shyamal Anadkat

OpenAI

Engineer and product leader who worked on OpenAI's Applied AI team and now advises startups on AI products. He writes publicly about agents, retrieval, and evaluation on his personal site.

OpenAI
Unknown 3
Profile Reports

Alec Radford

OpenAI

Alec Radford is a researcher and a co-author of the GPT-4 Technical Report. His GitHub profile links to his personal website at newmu.github.io.

OpenAI
United States 4
Profile Reports

Josh Batson

OpenAI

Researcher and engineer focused on AI systems, applications, alignment, and interpretability; contributed to OpenAI reasoning-model system-card work.

OpenAI
Unknown 2
Profile Reports

Sandhini Agarwal

OpenAI

Sandhini Agarwal is a researcher at OpenAI. Her OpenReview profile lists her as a researcher at OpenAI (2020–present) and an undergraduate student at Stanford University (2015–2019).

OpenAI
Unknown 5
Profile Reports

Alexander Kirillov

OpenAI

Alexander Kirillov is a researcher at OpenAI working on computer vision, deep learning, and multimodal systems. He previously held research roles at FAIR, UC Berkeley, and Carnegie Mellon University.

OpenAI
Unknown 1
Profile Reports

Bobak Shahriari

OpenAI

AI researcher and engineering leader at OpenAI working on multimedia, generation, reasoning, and representation learning. His public work focuses on maximizing the benefits of AI while minimizing harms.

OpenAI
United States 2
Profile Reports

J. J. Anumanchipalli

OpenAI

Assistant professor at UC Berkeley whose public profiles focus on speech interfaces, speech synthesis, and language grounding.

OpenAI
United States 2
Profile Reports

Aditya Krishna

OpenAI

Machine learning researcher and Columbia PhD student working on NLP, diffusion models, reinforcement learning, and applied probability; contributed to OpenAI reasoning-model system-card work.

OpenAI
Unknown 2
Profile Reports

Dianne Penn

OpenAI

Member of technical staff at OpenAI focused on code generation and synthetic data for post-training, with interests in coding, reasoning, human data, reinforcement learning, and self-improving systems.

OpenAI
Unknown 2
Profile Reports

Jason Phang

OpenAI

Research scientist at OpenAI focused on large language models, post-training, reasoning, and evaluation; previously completed a PhD at NYU.

OpenAI
Unknown 2
Profile Reports

Yash Patil

OpenAI

Founder of REWORKd and an applied AI engineer previously at OpenAI, Scale AI, and Stanford research, with work spanning autonomous agents and LLM applications.

OpenAI
Unknown 2
Profile Reports

Phil Tillet

OpenAI

OpenAI researcher and software engineer known for creating Triton, an open-source GPU programming language, and co-authoring the GPT-4 Technical Report.

OpenAI
United States 2
Profile Reports

Chris Hallacy

OpenAI

Engineer at OpenAI working on inference infrastructure, product engineering, and prototyping for systems including GPT-4 and DALL-E 2.

OpenAI
Unknown 3
Profile Reports

Jeff Wu

OpenAI

Researcher at OpenAI working on language model training and evaluation, and co-author of the GPT-4 Technical Report.

OpenAI
Unknown 4
Profile Reports

Johannes Heidecke

OpenAI

Head of Safety Systems at OpenAI.

OpenAI
Unknown 3
Profile Reports

Jake Cheng

OpenAI

Researcher working on reasoning and coding models, including OpenAI o3 and o4-mini.

OpenAI
Unknown 1

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