Stephen CasperAssistant Professor of Public Policy, Harvard Kennedy School · Harvard UniversityResearcher↗
Researcher · Academic
Harvard UniversityCatalyst Professor of Computer Science
OpenAIMember of Technical Staff
Barak studies the basic limits of what computers can solve and how those limits affect security and AI. He helped develop ways to analyze cryptographic systems using their internal code, and now applies theoretical tools to understanding deep learning and making language models safer.
Harvard University2016-present
OpenAI2024-present
Microsoft Research2010-2016
Princeton University2005-2011
Institute for Advanced Study2003-2005Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
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Reviewed August 24, 2026 · Checked for accuracy and new information.