Agent Lightning¶

Agent Lightning is the absolute trainer to light up AI agents.

Features¶

Turn your agent into an optimizable beast with ZERO CODE CHANGE (almost)! 💤
Build with ANY agent framework (LangChain, OpenAI Agent SDK, AutoGen, CrewAI, ...); or even WITHOUT agent framework (Python OpenAI). You name it! 🤖
Selectively optimize one or more agents in a multi-agent system. 🎯
Embraces Reinforcement Learning, Automatic Prompt Optimization and more algorithms. 🤗

Quick Links¶

Installation - Get started with Agent Lightning
Quickstart - Learn the fundamentals of Agent Lightning
Train SQL Agent with RL - A practical example of training a SQL agent
API Reference - Complete API documentation
Join our Discord community - Connect with other users and contributors

Resources¶

8/11/2025 Training AI Agents to Write and Self-correct SQL with Reinforcement Learning Medium.
8/5/2025 Agent Lightning: Train ANY AI Agents with Reinforcement Learning arXiv paper.
7/26/2025 We discovered an approach to train any AI agent with RL, with (almost) zero code changes. Reddit.
6/6/2025 Agent Lightning - Microsoft Research Project page.

Community Projects¶

DeepWerewolf — A case study of agent RL training for the Chinese Werewolf game built with AgentScope and Agent Lightning.

Citation¶

If you find Agent Lightning useful in your research or projects, please cite our paper:

@misc{luo2025agentlightningtrainai,
      title={Agent Lightning: Train ANY AI Agents with Reinforcement Learning},
      author={Xufang Luo and Yuge Zhang and Zhiyuan He and Zilong Wang and Siyun Zhao and Dongsheng Li and Luna K. Qiu and Yuqing Yang},
      year={2025},
      eprint={2508.03680},
      archivePrefix={arXiv},
      primaryClass={cs.AI},
      url={https://arxiv.org/abs/2508.03680},
}

License¶

See the LICENSE file for details.