ResearchBenchmarksSafe Reinforcement Learning on Safety Gymnasium Humanoid (C=25)Follow6,496.85ReturnCSPO2,264.61163,363.36584,462.125,560.8742Jun 12, 2026Evaluation ResultsMethodMethodLinksReturnCostCSPO2026.066,496.8518CPPOPID2026.066,417.0526.4PPO-Lag2026.066,414.5625.49IPO2026.066,270.2530.4CPO2026.066,213.1518.3APPO2026.066,092.9525.3EPO2026.065,745.6513.1P3O2026.065,684.2222C-TRPO2026.065,450.5215.9FOCOPS2026.065,295.8826.7PCPO2026.064,706.0714.7CUP2026.062,427.3918.9