AReaL vs TRL vs RL4LMs: Best RL Framework for LLM Agents in 2026
AReaL (5,500+ GitHub stars, July 2026), TRL (Hugging Face, 8,000+ stars), and RL4LMs (research framework) are the three leading open-source frameworks for reinforcement learning with LLM agents. AReaL provides PPO, REINF...