PettingZoo

Repository facts

Stars

3,535

Forks

547

Open issues and pull requests

62

Primary language

Python

License

MIT License (MIT)

Owner

Farama-Foundation · Organization

Created

Jan 20, 2020

Last push

Oct 9, 2026

Topics

• api
• gymnasium
• multi-agent-reinforcement-learning
• multiagent-reinforcement-learning
• reinforcement-learning

Rank #2,216 of 9,507 in AI on GitHub, by stars. Data from the GitHub API, fetched Oct 18, 2026; star counts change daily. Stars measure popularity, not quality or safety, and a listing is not an endorsement. How this list is made

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