Cartesia Sonic
Inspect the documented capabilities, access conditions and sources for your task.
Initial research: 2026-09-21. Check current terms before choosing.
Updated
The facts
- Version
- Sonic 3.5–3.6
- Price
- From $5 per month. Subscription. Included usage and billing terms vary by plan.
- API
✓Supported - Open weights
✕Not supported - Commercial use
- Commercial use from the $5/mo Pro plan. Consent handling is terms-based only — weaker than ElevenLabs' Voice Captcha or Fish Audio's live ownership check, which matters if you are cloning real people.
- Voice Cloning
✓Supported Clones from 10–60 seconds; 30+ minutes for Pro-grade.
Source for Voice Cloning (opens in a new tab)- Realtime Streaming
✓Supported Cartesia's whole positioning is low-latency realtime voice for agents.
Source for Realtime Streaming (opens in a new tab)- Languages
~Partly 44 languages — well behind ElevenLabs' 70+ and Fish Audio's 83.
Source for Languages (opens in a new tab)- Emotion Control
?Not verified Not confirmed in fetched sources.
Source for Emotion Control (opens in a new tab)
Commercial risk
No litigation found in fetched sources.
Sources
Beyond feature support
Quality evidence.
How well a model performs depends on the task, version, and settings.
We have not published a reviewed quality evaluation for these versions yet. Feature support and price do not establish output quality.
Try the same small task with each option. Check accuracy, consistency, and how much editing you need to get a usable result.