Christopher A. Choquette-Choo is a Research Scientist (Technical Staff) on the Alignment team at OpenAI. He works on fundamental and applied research at the intersection of safety, privacy, and security with machine learning. Previously, he was a Research Scientist at Google Deepmind where he led privacy and security evaluations and mitigations for their frontier models (Gemini, Gemma, etc.). Notable research topics are language modeling, memorization, differential privacy, auditing, and collaborative learning.