Gymnasium
by Farama-Foundation · GitHub
A standard API for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)
# api# gym# reinforcement-learning
⭐ Stars
12.2k
🍴 Forks
1.4k
🔥 Trending
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📜 License
MIT
Commercial use OK📅 Created
2022
🔄 Last commit
today
🏷️ Category
api
💻 Language
Python
📈 Star history
2026-07-122026-07-15
📄 About
A standard API for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)
Read the full guide❓ Frequently asked questions
What is Gymnasium?
A standard API for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)
Is Gymnasium open source?
Gymnasium is an open-source project. It is released under the MIT license.
Is Gymnasium free?
Yes. Gymnasium is free and open source — you can use, modify and self-host it.
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