Long Phan3 papers on this site (2023–2025)Humanity's Last ExamLong Phan, Alice Gatti, Ziwen Han, et al.2025HarmBench: A Standardized Evaluation Framework for Automated Red Teaming and Robust RefusalMantas Mazeika, Long Phan, Xuwang Yin, et al.2024Representation Engineering: A Top-Down Approach to AI TransparencyAndy Zou, Long Phan, Sarah Chen, et al.2023