Tech riderRev. 1 Oct 2026

Cartesia Sonic

Ch 158.3of 222 Text-to-speech tools

1Runs onAPI, Web
2CostsFree plan · paid from $5/mo
3Commercial useYes
4Voice cloningYes
5API accessYes

5 lines stated Written from the maker's own pages: cartesia.ai

Visit site Alternatives

Overview

Cartesia Sonic is ranked #15 of 222 in text-to-speech tools on Specifiction, made by Cartesia Sonic (San Francisco, California, United States). It runs on API, Web. There is a free plan. Paid plans start at $5/mo.

Cartesia Sonic plans and pricing

All plans

Free Free billed monthly 20K credits per month · $1 prepaid agents per month cartesia.ai · 20 Sept 2026

Pro $5/mo $5/mo 100K credits / month · $5 prepaid agents / month · Commercial use license · Instant voice cloning cartesia.ai · 1 Oct 2026

Startup $49/mo $49/mo 1.25M credits / month · $49 prepaid agents / month · Pro voice cloning · Organizations cartesia.ai · 1 Oct 2026

Scale $299/mo $299/mo 8M credits / month · $299 prepaid agents / month · Priority support · High concurrency limits cartesia.ai · 1 Oct 2026

Enterprise Not published Custom credits and agent usage cartesia.ai · 20 Sept 2026

Free Free $0/mo 20K credits / month · $1 prepaid agents / month · Text to Speech · Speech to Text cartesia.ai · 1 Oct 2026

Compared on text-to-speech tools

Free plan: Yescartesia.ai
Paid from: $5/mocartesia.ai
Voice cloning: Yescartesia.ai
Commercial use: Yescartesia.ai
API access: Yescartesia.ai

Facts

Platforms: Web, APIcartesia.ai · 20 Sept 2026
Product: Sonic is a text-to-speech model for real-time voice applications.cartesia.ai · 1 Oct 2026
Latency: Sonic has sub-90ms latency.cartesia.ai · 1 Oct 2026
Languages: Sonic supports 44 languages.cartesia.ai · 1 Oct 2026
Emotion: Sonic interprets emotional subtext and can insert non-verbal expressions such as laughter into transcripts.cartesia.ai · 1 Oct 2026
Localization: Sonic can localize an audio clip into other languages while carrying over emotion, tone, and speaker identity.cartesia.ai · 1 Oct 2026
Pronunciation: Custom pronunciation dictionaries let users specify pronunciations for proper nouns and domain terms.cartesia.ai · 1 Oct 2026
Integrations: Managed Agents can use Cartesia-provisioned numbers, import Twilio numbers, or connect a carrier over SIP.cartesia.ai · 1 Oct 2026
Voice agents: Managed Agents combine Ink-2 speech-to-text, a chosen LLM, and Sonic-3.6 text-to-speech with turn-taking and interruption handling.cartesia.ai · 1 Oct 2026
Security: Cartesia lists HIPAA compliance, SOC 2 Type 2, GDPR, and PCI on the Sonic page.cartesia.ai · 1 Oct 2026
Deployment: Cartesia says Sonic can be deployed on-premise, in a customer VPC on AWS, GCP, or Azure, or through OEM licensing.cartesia.ai · 1 Oct 2026
Support: Cartesia's documentation directs users to Discord to chat with the Cartesia team and community for help.docs.cartesia.ai · 1 Oct 2026
Concurrency: The Free plan lists two concurrent Sonic text-to-speech requests, while Pro lists three.cartesia.ai · 1 Oct 2026