Multiple Live Avatars + Chrome Extension

We share an open-source demo showcasing how to build an interactive experience that features multiple LemonSlice avatars, real-time transcription of browser audio, and a Chrome extension form factor.

Use Cases
•
May 28, 2026
•
5
 min read
Multiple Live Avatars + Chrome Extension

Did you know live avatars can comment on anything your browser is playing, no per-site integration required? 

Most second-screen experiences are locked to a single platform: a Twitch overlay, a YouTube extension, a Spotify plugin. 

This demo skips all of that. The extension grabs whatever audio is in your active tab with chrome.tabCapture, ships it over LiveKit, and two LemonSlice avatars in the side panel start cracking jokes about what they hear. 

We open-sourced the whole stack so you can try it, fork it, and even create your own characters.

Technical highlights 

This demo includes the following: 

  • Multiple avatars: multiple avatars interacting with each other, each with their own personality  
  • Live browser audio: transcribes audio directly from your browser in real-time. This works across any site from Netflix to Twitch
  • Chrome extension: an easy form-factor for usability and sharing  

The pipeline is Groq for STT and LLM, ElevenLabs for voice, and LemonSlice for the avatars. 

Try It

Try it for free on the Chrome Extension Store. It takes <1 minute to install. 

  1. Install Couchverse from the Chrome Web Store
  2. Open a tab playing anything with audio, and open the extension the icon

Click the “Start Couchverse” button. The Alien and Cat girl characters will start commentating. Tip: You can edit their chattiness in the “OPTIONS” dropdown

Open-Source Code

Github repo: https://github.com/lemonsliceai/couchverse

Make your own Characters 

A persona in Couchverse is one Python file (for the LLM personality) and one image. See the full directions here to modify the personas and make them your own.

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Red Gradient Over a boy
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Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Red Gradient Over a Lady in the evening time
Blue Gradient over a men
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Red Gradient Over a Lady in the evening time
Green Gradient Over a Lady at a subset time
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a girl with glasses
Red Gradient Over a boy
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Blue Gradient over a men
Yellow Gradient over a girl a tied hair and a bun
Green Gradient Over a Lady at a subset time
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses
Yellow Gradient over a girl a tied hair and a bun
Blue Gradient over a men
Red Gradient Over a Lady in the evening time
Red Gradient Over a boy
Green Gradient Over a Lady at a subset time
Blue Gradient over a girl with glasses