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Cartesia vs Soniox

People
CartesiaAI Voice API
SonioxAI Voice API
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Price
Published entry price
$5+per month
Usage-based

AI Voice API

Annual estimate10 people, entry price
$60+
Flat rate
Usage-based
Offer
20% off
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AI Voice API

Overview
Focus
AI Voice API
AI Voice API
Product
Cartesia builds voice model infrastructure focused on real-time performance for conversational interfaces and AI voice products.
Real-time speech recognition platform with state-of-the-art accuracy for transcription and voice applications.
Headquarters
San Francisco, California
Palo Alto, California
Company size
11-50 employees
Founded
2023
2020
Pricing details
Plan
Published entry price
Published rate
$5+ / month
Usage-based
Billable seats
Flat rate
Free options
Free plan, Free trial
Pricing source
Source updated
Nov 2, 2026
Oct 29, 2026

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AI Voice API