▲ 623 today·16.7k stars·C++·HN ×1

MuJoCo opens source, surges with 600 fresh stars

Repo · google-deepmind/mujoco

VideoRobotics

What is mujoco?

MuJoCo is a fast, accurate physics simulator for robots, biomechanics, graphics and machine-learning research. It runs natively on your desktop, in a browser via WebAssembly, and offers Python and Unity bindings.

Who it is for

Researchers and developers building RL agents, virtual humans, or game physics can prototype and test interactions without building a custom engine.

Try it in 60 seconds

1. Open the web demo at https://live.mujoco.orgCopy

Apache-2.0 licenseUpdated todayC++305 open issues

New projects are not vetted. Skim the code, and run it in a fresh folder or a container before giving it your files or keys.

Open on GitHub → Website / demo

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The story so far

Early Signal first spotted google-deepmind/mujoco on November 8, 2026, when it had 16.5k GitHub stars. It now has 16.7k. On its busiest day it gained 623 stars. It is published under the Apache-2.0 license and has 2k forks. It has been discussed in 1 Hacker News thread, the top one with 116 points. Early Signal files it under Video, Robotics.

Questions about mujoco

Is mujoco free and open source?

Yes. google-deepmind/mujoco is open source under the Apache-2.0 license, and the code is on GitHub at https://github.com/google-deepmind/mujoco.

How do I try mujoco?

Open the web demo at https://live.mujoco.org