# Google DeepMind releases MuJoCo 4.0 and MuJoCo Playground 1.0 for robotics simulation

> Original title: robotics simulation just leveled up massively. MuJoCo 4.0 + MuJoCo Playground 1.0 are here! 🤖⚡

- Source: Paige Bailey
- Published: 2026-11-09T17:10:29.000Z
- Bad Influence: https://badinfluence.news/items/gpe84wjtppq30q81pps1tbf94
- Original: https://x.com/DynamicWebPaige/status/2119840060212167121

## Summary

Paige Bailey says MuJoCo 4.0 and MuJoCo Playground 1.0 are now available, adding a zero-install web viewer and Filament PBR rendering with hot-reload in MuJoCo Studio. The release also adds speculative contacts that the post says make thin-object grasping 6–9x faster, and end-to-end sim-to-real with PyTorch and MuJoCo Warp in Playground 1.0. The post credits Google DeepMind's robotics sim team and 45+ open-source contributors for about 2K commits, and gives the install command pip install -U mujoco.

## Why it matters

The post lists concrete changes in MuJoCo 4.0 and Playground 1.0, including faster thin-object grasping and sim-to-real support, useful for robotics developers weighing an upgrade.

## Post

robotics simulation just leveled up massively. MuJoCo 4.0 + MuJoCo Playground 1.0 are here! 🤖⚡

🔘 Zero-install web viewer (http://live.mujoco.org) + Filament PBR and hot-reload in MuJoCo Studio
🔘 Clay that dents, paper that creases, and cloth that never clips
🔘 Speculative contacts (6–9x faster thin-object grasping!)
🔘 @PyTorch + MuJoCo Warp end-to-end sim-to-real in Playground 1.0

Huge congrats to @GoogleDeepMind's robotics sim team & the 45+ open-source contributors who shipped ~2K commits to make this happen!

pip install -U mujoco ✨

https://github.com/google-deepmind/mujoco/discussions/3773

[Video](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Famplify_video_thumb%2F2119840029753147392%2Fimg%2FEz4GsN0erflMfqEh.jpg&mode=thumb&exp=1794528000&sig=e79525b80af2a2c5)