alibaba/ROLL

An Easy-to-use, Scalable and High-performance Agentic RL Framework based on Ray (PPO & DAPO & REINFORCE++ & VLM & TIS & vLLM & Ray & Async RL)

A repo for distributed training of language models with Reinforcement Learning via Human Feedback (RLHF)

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

Democratizing Reinforcement Learning for LLMs

slime is an LLM post-training framework for RL Scaling.

EasyR1: An Efficient, Scalable, Multi-Modality RL Training Framework based on veRL

Train transformer language models with reinforcement learning.

Agent Reinforcement Trainer: train multi-step agents for real-world tasks using GRPO. Give your agents on-the-job training. Reinforcement learning for Qwen3.6, GPT-OSS, Llama, and more!

An implementation of model parallel autoregressive transformers on GPUs, based on the Megatron and DeepSpeed libraries