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stable-baselines3
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stable-baselines3

PyTorch version of Stable Baselines, reliable implementations of reinforcement learning algorithms.

by DLR-RM · GitHub
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In plain words

Stable-Baselines3 provides carefully tested PyTorch implementations of the main RL algorithms — PPO, SAC, TD3 — with sane defaults.

From the README

Install
pip install 'stable-baselines3[extra]'
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2026-06-282026-08-31
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📄 About

PyTorch version of Stable Baselines, reliable implementations of reinforcement learning algorithms.

stable-baselines3 has 13.6k stars on GitHub. It has been forked 2.2k times. stable-baselines3 is written mainly in Python. It has been in active development since 2020. stable-baselines3 is available under the MIT license. Its main topics are baselines, gsde, gym, machine-learning.

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Frequently asked questions

What is stable-baselines3?

PyTorch version of Stable Baselines, reliable implementations of reinforcement learning algorithms.

Is stable-baselines3 open source?

stable-baselines3 is an open-source project. It is released under the MIT license.

Is stable-baselines3 free?

Yes. stable-baselines3 is free and open source — you can use, modify and self-host it.

What license does stable-baselines3 use?

stable-baselines3 is available under the MIT license.

What language is stable-baselines3 written in?

stable-baselines3 is written mainly in Python.

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