hallerite/ludic

SkyRL: A Modular Full-stack RL Library for LLMs

The complete post-training stack for LLMs, plus RL for any problem. SFT, DPO and multi-turn agentic RL, with evolutionary hyperparameter optimization built in.

Democratizing Reinforcement Learning for LLMs

An Efficient and User-Friendly Scaling Library for Reinforcement Learning with Large Language Models

verl/HybridFlow: A Flexible and Efficient RL Post-Training Framework

Open Source LLM Reinforcement Learning Framework for MLGym Environments 2026

Fine-tune LLM agents with online reinforcement learning

FineEnvs — RL Environments 101: building and scaling RL environments in the age of LLMs