OdysSim: Building Foundation Models for Human Behavior Simulation

In three linesOdysSim presents the largest systematic investigation of behavioral foundation models for human behavior simulation. Researchers propose SOUL, a taxonomy of 5 axes (CONV, SS, COG, ROLE, EVAL) unifying 62 datasets and 23 benchmark tasks. The open 8B OSim model ranks first/tied-first on 8/23 tasks, outperforming frontier models, with 93.2% reaction alignment vs 93.5% for real users.

Summary generated by Claude — human-verified