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LlamaGym

An open-source library for fine-tuning LLM agents with online reinforcement learning.

PricingFree
Free planYes
UrduLimited / no

Best for: ML researchers and developers training agents

Visit LlamaGym

LlamaGym is a GitHub library that helps you improve language model agents by letting them learn from experience. It applies online reinforcement learning, so an agent can be fine-tuned as it interacts with an environment.

It lowers the effort needed to experiment with this style of training. It is free and open source, best suited to machine learning researchers, students and developers curious about training agents rather than just prompting them.

Key features

  • Online reinforcement learning
  • Fine-tunes LLM agents
  • Open-source library
  • Free to use

Prices and features change often; check the official website for the latest plans. Last updated September 24, 2026.

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