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.

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.