ResearchBenchmarksSafe Reinforcement Learning on Hopper-VelocityFollow1,554.56RewardRCPO1,162.09521,263.98511,365.8751,467.7649Jan 26, 2026Evaluation ResultsMethodMethodLinksRewardCostEpisode LengthRCPO2026.011,554.5637.53979.3TRPO-ADRC2026.011,470.6110.671,000CUP2026.011,326.8426.9854.4CPPO-ADRC2026.011,322.8310.43910.2RCPO-ADRC2026.011,248.949.27818.1IPO2026.011,216.0127.57797.33PDO2026.011,177.1918.03797.57