ResearchBenchmarksSafe Reinforcement Learning on Safety Gymnasium Ant (C=25)Follow3,231.6ReturnCSPO1,668.62562,074.39782,480.172,885.9422Jun 12, 2026Evaluation ResultsMethodMethodLinksReturnCostCSPO2026.063,231.624.5CPPOPID2026.063,19025.3PPO-Lag2026.063,134.1724.3IPO2026.063,123.626.6CPO2026.063,055.819.6C-TRPO2026.063,042.6418APPO2026.062,961.3624.49FOCOPS2026.062,860.8826.7CUP2026.062,839.6526.6EPO2026.062,754.5513.9P3O2026.062,514.8123.1PCPO2026.061,728.7418.5