Open WebUI v0.12.1: Channel Apps, Avatars in Standard Calls
Open WebUI v0.12.1 lets outside apps join channels and respond when mentioned, and adds voice avatars to Standard calls. It also brings a “Compare revision” view, a “Mentions only” channel setting and single-file .skill exports.
What the article says
On 14 October 2026, Open WebUI released version 0.12.1, which builds on the features of 0.12.0 (real-time voice calls, 3D avatars, shared conversations) and fixes issues reported afterward. Version 0.12.2 came out the same day.
New items include experimental external apps, written with the oix Python SDK, that join a channel and answer mentions (off by default, enabled by an administrator); the 3D avatar in Standard calls, with a speech synthesis engine other than Web API needed to animate the mouth; more stable Realtime calls that cope with noise and work with Azure OpenAI; comparison of revisions of system prompts and skills; and a .skill export format. The update includes database migrations: back up first, and update all instances together behind a load balancer.
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