MuJoCo
Embodied AI & Robotics · Free
Physics engine for robotics, biomechanics, and RL research
At a glance
- Made by
- Google DeepMind
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- API
- Open source
- Open source (license name not listed on the page)
- GitHub
- 15,667 stars · Apache-2.0
What is MuJoCo?
MuJoCo (Multi-Joint dynamics with Contact) is a general-purpose physics engine for research and development. It is a simulator designed from the ground up for model-based optimization, especially optimization through contacts. It makes computationally intensive techniques such as optimal control, state estimation, system identification, and automatic mechanism design applicable to complex systems with many contacts. It provides a C API, Python bindings, and a Unity plugin, and supports 3D visualization with an OpenGL-based GUI.
- Generalized-coordinate simulation that prevents joint violations
- Inverse dynamics that are well-defined even with contacts
- Constraints such as soft contacts, limits, and friction
- Simulation of particle systems, cloth, rope, and soft bodies
- Actuators such as motors, cylinders, muscles, and tendons
- XML model format (MJCF) and built-in model compiler
- Interactive OpenGL-based 3D visualization GUI
- Python bindings and Unity plugin
Who uses MuJoCo and for what
- Test and validate control methods before deploying on real robots
- Research on optimal control, state estimation, and system identification
- Scientific visualization, virtual environments, animation, and games
Pricing
What you get for free — Yes (free, open source)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.
AI tools similar to MuJoCo (alternatives)
MuJoCo vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| MuJoCo | Free | 0 | 2 | Yes | — | No |
| NVIDIA Isaac Lab | Free | 0 | 2 | — | — | No |
| NVIDIA Isaac Sim | Free + paid | 0 | 2 | Yes | — | No |
2 of these 3 tools have a free plan.
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
MuJoCo on AI Galaxy Map
- One of 8 AI tools in the Embodied AI & Robotics field.
- Connected to 2 other tools — #5 in its field.
Frequently asked questions
Can I use MuJoCo for free?
Yes (free, open source). Prices can change, so check the official site before paying.
What AI can I use instead of MuJoCo?
Tools that do the same job, such as NVIDIA Isaac Lab, NVIDIA Isaac Sim, are connected to it on the map.
Can I use MuJoCo in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.