Revisiting Group Relative Policy Optimization: Insights into On-Policy and Off-Policy Training - Mroueh, Youssef; Dupuis, Nicolas; Belgodere, Brian; Nitsure, Apoorva; Rigotti, Mattia; Greenewald, Kristjan; Navratil, Jiri; Ross, Jarret; Rios, Jesus (International Conference on Learning Representations, 2026)