Pyyan / Compare / Fish Audio S2 Pro vs Cartesia Sonic 3
Fish Audio S2 Pro vs Cartesia Sonic 3
2 of 5Voice & Audio · verified 13 Aug 2026
Fish Audio S2 ProFish Audiocurrent
Cartesia Sonic 3Cartesiacurrent| Specification | Fish Audio S2 Pro | Cartesia Sonic 3 |
|---|---|---|
| Summary | Top open-weights TTS. | Fastest commercial TTS. |
| Arena Elo | 1123 | — |
| Price ($/M chars) | $15 | — |
| Clone from | — | 3s |
| Open weights | Yes | No |
| Category | Voice & Audio | Voice & Audio |
| Official | Fish Audio ↗ | Cartesia ↗ |
Highlighted rows are where these differ.
Fish Audio S2 Pro
- 80+ languages, 50+ emotion controls
- Roughly six times cheaper than ElevenLabs
Best for self-hosting.
Cartesia Sonic 3
- 40–90ms time to first audio
- Clones from 3 seconds
- Built for turn-taking
Best for phone agents.