Sonic 3
Cartesia
· sonic-3
Voice and Text-to-Speech
Production
Fastest
Ultra-low-latency streaming TTS built for real-time voice agents and live experiences.
Best use cases: Real-time voice, interactive experiences
8.5
Quality
10
Speed
8
Cost Eff.
8
Brand Safety
7
Control
8.5
Adherence
Input cost
—
Output cost
—
Generation cost
$0.04 / 1K chars
Max context / duration
Streaming
Aspect ratios
—
Resolutions
44.1kHz
Input types
Text stream
Output types
Audio stream
API endpoint
api.cartesia.ai
Commercial use
Allowed
Data retention
Zero retention
Regions available
US, EU
API connected
Connected
Last updated
Release date
Documentation