John NhamResearch · OpenAIResearcher↗Researcher · Engineer
OpenAIMember of Technical Staff
DePue was a core contributor to Sora and Sora 2, OpenAI's video generators, then helped post-train o3, o4-mini, GPT-4o and GPT-5. His work has focused on reward models, tool use and reducing sycophancy—the tendency for assistants to agree with users instead of answering honestly.
Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
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Reviewed August 9, 2026 · Checked for accuracy and new information.