Head to head · Agents · updated Oct 27, 2026
LiveKit Agents vs Cartesia
LiveKit Agents scores 37 to Cartesia's 9 on public evidence for voice & phone agents, and they rank #2 and #4 there. Both are free to start. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
LiveKit Agents
Open-source framework for realtime voice and video agents on WebRTC transport.
+ WebRTC underneath means in-app and in-browser voice, not only phone calls.
− You run the media plane or pay for theirs - the framework alone is not a product.
Cartesia
Sonic: very low-latency voice generation built for live conversation.
+ Latency low enough for a voice agent that can be interrupted.
− Fewer polished preset voices than ElevenLabs, and it is API-first.
Side by side
public evidence| LiveKit Agents | Cartesia | |
|---|---|---|
| Evidence score / 100 | 37 | 9 |
| GitHub stars | 14,965 | closed source |
| Hacker News stories, 30d | 0 | 0 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | 0 days ago | – |
| Pricing | Open source · Apache 2.0; LiveKit Cloud is the paid hosted transport | Free tier · Free credits to try; usage-based after |
| Platforms | web, api, cli, linux | api, web |
| Maker | LiveKit | Cartesia |
Which one?
Pick LiveKit Agents if
- you want the stronger public evidence (37 vs 9)
- you want open source — self-host it, read it, fork it
- you need it on cli, linux
- a bigger GitHub community matters (14,965 vs 0 stars)
Best for voice inside your own app or website.
Pick Cartesia if
Latency low enough for a voice agent that can be interrupted.
Best for real-time voice agents.