# MuJoCo 3.16.0 released: adds compile-time frame scaling, Bazel build, and multiple breaking API changes

- Source: GitHub Robotics Topic
- Published: 2026-10-14T09:29:02.000Z
- RoboHot: https://robohot.news/en/items/h0g7q5hwrpxkfgv3tjtxmlbji
- Original: https://github.com/google-deepmind/mujoco/releases/tag/3.16.0

## Summary

MuJoCo 3.16.0 was released on October 14, 2026. Frames gain scale, scaling, and massscale attributes that can scale their contents at compile time without modifying mjSpec. New savecompiled and savecanonical compile attributes preserve the original modeling style, and the core library, simulate, plugins, and examples can now be built with Bazel.

## Why it matters

This release makes compile-time scaling and save round-trip consistency explicit capabilities, so you don't have to worry about losing original editing information when changing model specifications.