Gymnasium
The standard interface for reinforcement learning
Robotics & embodied AIRL environment APIMITRuns locallyPythonBeginner
🐳 Docker pulls
📦 PyPI downloads / month
📦 npm downloads / month
🚀 Latest release ·
What is Gymnasium?
Gymnasium is the maintained successor to OpenAI Gym: one API that every RL algorithm and environment speaks.
Why people choose Gymnasium
- The interface the whole RL ecosystem implements
- Dozens of environments included
- Actively maintained, unlike the original Gym
Gymnasium at a glance
| Category | Robotics & embodied AI |
| Type | RL environment API |
| License | MIT |
| Runs locally | Yes |
| Built with | Python |
| Skill level | Beginner |
| Best for | learning RL, or benchmarking an algorithm against a known baseline |
Latest releases
Open-source alternatives to Gymnasium
Other open-source robotics & embodied ai tools worth comparing:
GenesisGenerate robotic worlds from a text prompt
LeRobotTrain real robots with the Hugging Face stack
ArduPilotAutopilot for drones, rovers and boats
MuJoCoThe physics engine most robotics research runs on
Stable-Baselines3Reliable RL algorithms you can actually trust
openpi (π0)Open weights for robot foundation models
PX4The autopilot behind most commercial drones
AutowareA complete open-source self-driving stack
Isaac LabMassively parallel robot training on NVIDIA GPUs
ROS 2The operating system layer of modern robotics
Nav2Make a mobile robot navigate on its own
Diffusion PolicyTeach a robot by showing it, using diffusion
HabitatTrain agents to act in photorealistic homes
MoveIt 2Motion planning and manipulation for robot arms
GazeboSimulate a whole robot, sensors includedGymnasium head-to-head
Gymnasium vs GenesisGymnasium vs LeRobotGymnasium vs ArduPilotGymnasium vs MuJoCoGymnasium vs Stable-Baselines3Gymnasium vs openpi (π0)Gymnasium vs PX4Gymnasium vs AutowareGymnasium vs Isaac LabGymnasium vs ROS 2Gymnasium vs Nav2Gymnasium vs Diffusion PolicyGymnasium vs HabitatGymnasium vs MoveIt 2Gymnasium vs Gazebo
FAQ
Is Gymnasium free?
Gymnasium is free and open-source (MIT license), so you can use, self-host and modify it at no cost.
Can I run Gymnasium locally?
Yes. Gymnasium is designed to run on your own machine or server, keeping your data private.
What is the best alternative to Gymnasium?
Popular open-source alternatives include Genesis, LeRobot, ArduPilot. See the comparisons above to choose.
Explore more open-source AI
Browse the full directory of open-source AI tools, models and projects — updated daily.
Browse all tools →