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Record · rllmFrameworkOpen sourceVerified Jul 3, 2026

rllm

Democratizing Reinforcement Learning for LLMs

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About rllm

rLLM is an open-source framework for training language agents with reinforcement learning. Bring any harness, run it in any sandbox, and switch training backends with one flag — the same agent code drives both eval and training.

rLLM requires Python >= 3.11. You can install it either directly via pip or build from source.

This installs dependencies for running rllm CLI with the tinker backend (single-machine, Tinker API). For other backends:

From the project's README

rllm is an open-source project written primarily in Python, with 5.8k stars on GitHub. It was last updated in August 2026.

Install

uv pip install "rllm @ git+https://github.com/rllm-org/rllm.git"
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