Introducing glTF 2.1 with Complex Scenes

Since the release of glTF 2.0 in 2017, the format has matured into a rich ecosystem spanning mesh compression, texture optimization, 3D Gaussian splats, and more. Today, the Khronos 3D Formats Working Group is excited to announce plans for glTF 2.1: a focused, backward-compatible revision of the core specification, built around a single motivation — making glTF work as well for large, composed scenes as it already does for single assets. Every feature in this release addresses a real gap that today forces teams toward proprietary conventions, custom tooling, or workarounds that break interoperability.