Agent Lightning
Agent Lightning is a framework that trains AI agents with reinforcement learning so they get better at their tasks for developers.
What it is good for
- Training an AI agent to improve on a benchmark
- Running agents as Kubernetes Jobs at scale
- Improving a coding agent using repository tests
- Tuning an existing agent without rewriting its code
At a glance
- Who it is for
- Setup
- Requires programming
Level 5 of 5. You need to write code to use it.
- Cost
- Free and open source
- Type
- Framework or SDK
- Tasks
- Works with
- verl, vLLM, AutoGen, Kubernetes
Momentum
- Rank this week
- Not ranked yet
- Best rank
- None yet
- GitHub stars
- 18,869
GitHub numbers as of Nov 2, 2026. Updated weekly.
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is Agent Lightning free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use Agent Lightning?
- Yes. You need to write code to use it.
- What does Agent Lightning work with?
- According to its own documentation, it works with verl, vLLM, AutoGen, and Kubernetes.
- What is Agent Lightning good for?
- Training an AI agent to improve on a benchmark, running agents as Kubernetes Jobs at scale, improving a coding agent using repository tests, and tuning an existing agent without rewriting its code.
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