VRChat’s Avatar SDK still supports only 256 bits for parameters in late 2025 and likely even going into 2026. This is far from sufficient, especially with current face-tracking technologies. We now have new capabilities such as eye tracking, mouth tracking, and more. Many upcoming headsets will include these features, and there are also external VR face tracking modules on the way.

I have created face tracking setups for Karin, Rusk, Manuka, and several other avatars. To achieve even remotely good face tracking, you already need around 210 to 240 bits. After allocating that, there are no remaining bits for any toggles at all, no clothing switches, no material changes, no animation triggers. Even installing systems like GoGo Loco becomes nearly impossible because there are simply no bits left.

By the end of 2025, VRChat should finally increase the limit to 512 bits on PC, while Quest can stay at 256 if necessary. We are living in the future, not the past.