Set up the AI Co-Host

The AI Co-Host is an avatar that watches your gameplay and reacts on stream — boss kills, clutch plays, rare unlocks — with its own personality and voice. The feature itself is free; setup is four steps in the Avatar Studio:

1. Pick a companion. Choose a base personality, or write a custom prompt on top of any of them to make it talk exactly how you want.
2. Give it eyes. Pick a vision provider: Preset is built in and needs no key (great for starting out), or bring your own OpenAI/Google key for sharper game understanding — see vision & voice options.
3. Give it a voice. Browser TTS works free out of the box; premium voices are available via your own ElevenLabs key.
4. Add it to OBS. Copy the avatar overlay URL from the Studio and add it as a browser source at 400×300. Works in OBS, Streamlabs, XSplit — anything with browser sources.

To let it actually see your game, run the desktop client — it captures your screen on an interval you control and feeds it to the avatar. It's also stream-chat aware, so it can respond to what your viewers are saying.

The full illustrated walkthrough with every provider option lives at the Avatar Guide.