Dan received his PhD from UC Berkeley where he was advised by Dawn Song and Jacob Steinhardt. He is now the director of the Center for AI Safety. Dan received his BS from UChicago. His research is supported by the NSF GRFP and the Open Philanthropy AI Fellowship. Dan helped contribute the GELU activation function (the most-used activation in state-of-the-art models including BERT, GPT, Vision Transformers, etc.), the out-of-distribution detection baseline, and distribution shift benchmarks.