Cartesia vs Fish Audio
A side-by-side comparison of Cartesia and Fish Audio, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
Fish Audio
AudioExpressive, emotionally controllable text-to-speech, voice cloning, and voice agents.
View Fish AudioAt a glance
| Attribute | Cartesia | Fish Audio |
|---|---|---|
| Category (differs) | Voice | Audio |
| Pricing | FREEMIUM | FREEMIUM |
| License | Proprietary | Proprietary |
| Deployment | Cloud | Cloud |
| Platforms (differs) | API | Web, API |
| Model support (differs) | Single model (proprietary) | Self-contained (on-device) |
| Vendor (differs) | Cartesia | Fish Audio |
The honest brief
Cartesia
State-space Sonic models hit sub-100ms first audio — the latency floor for real-time voice agent loops.
- Streaming over WebSocket for fast first audio
- State-space architecture, not transformer
- Streaming-first WebSocket protocol depth
- Cost-competitive at scale
- Long-form expressive texture trails ElevenLabs
- Fewer voices than ElevenLabs catalog
- API-only, no end-user app
Fish Audio
Open-weight models plus a hosted API at a fraction of ElevenLabs' price, with emotion-tagged expressive speech.
- Expressive, emotion-controllable TTS
- Fast voice cloning from ~15s of audio
- Open-source Fish Speech models
- Notably cheaper than ElevenLabs
- Multilingual with a developer API
- Hosted platform itself is proprietary
- Free tier has monthly generation caps
- Smaller voice library than incumbents
- Voice cloning carries misuse risk