Cartesia vs Speechmatics

Side-by-side comparison of Cartesia and Speechmatics: pricing, features, API access, and community ratings.

AI comparison summary

Generating comparison…

	Cartesia Architecting AI that learns and interacts like humans — ultra-low latency voice AI Visit	Speechmatics Low-latency speech-to-text APIs powering multilingual, multi-speaker Voice AI Visit
Category	Voice & speech	Voice & speech
Pricing	Freemium	Freemium
Starting price
Free tier
Audience	All audiences	All audiences
API available
Open source
Self-hostable
Model provider	Cartesia
Founded		2006
Headquarters		Cambridge, United Kingdom
Key strengths	·Ultra-low latency real-time voice models built on State Space Models (SSMs) ·Full-stack voice platform: STT (Ink), TTS (Sonic), and voice agents (Line) ·Flexible deployment: cloud, on-premise, and on-device ·Enterprise-grade compliance with in-region data residency support	·Sub-second real-time speech-to-text with high accuracy ·55+ language support covering over half the world's population ·Flexible deployment: cloud, on-premises, and on-device ·Enterprise-grade security: ISO 27001, GDPR, HIPAA, SOC 2 Type II certified