Pyyan / Compare / Cartesia Sonic 3 vs Chatterbox
Cartesia Sonic 3 vs Chatterbox
2 of 5Voice & Audio · verified 13 Aug 2026
Cartesia Sonic 3Cartesiacurrent
ChatterboxResemble AIcurrent| Specification | Cartesia Sonic 3 | Chatterbox |
|---|---|---|
| Summary | Fastest commercial TTS. | Best open-source cloning. |
| Clone from | 3s | 5s |
| Open weights | No | Yes |
| Category | Voice & Audio | Voice & Audio |
| Official | Cartesia ↗ | Resemble AI ↗ |
Highlighted rows are where these differ.
Cartesia Sonic 3
- 40–90ms time to first audio
- Clones from 3 seconds
- Built for turn-taking
Best for phone agents.
Chatterbox
- Clones from ~5 seconds
- 17 languages
- Wins blind tests against ElevenLabs
Best for free cloning.