CHI-Bench: Can AI Agents Automate End-to-End, Long-Horizon, Policy-Rich Healthcare Workflows? - Haolin Chen; Deon Metelski; Leon Qi; Tao Xia; Joonyul Lee; Steve Brown; Kevin Riley; Frank Wang; T. Y. Alvin Liu; Hank Capps MD; Zeyu Tang 002; Xiangchen Song; et al. (CoRR, 2026)