Audience
Developers and product teams that need to generate natural, expressive, multilingual speech for real-time voice and conversational AI applications
About Cartesia Sonic-3.5
Sonic 3.5 is Cartesia’s fastest, most natural text-to-speech model, built for expressive, real-time voice generation with sub-90ms latency and native support for 42 languages. It is designed to follow transcripts faithfully, voice confirmation codes, and heteronyms correctly without preprocessing, and stay expressive enough to carry a real conversation. It supports languages intended to deliver native-quality speech. Sonic 3.5 focuses on clean audio across every language and voice, with no artifacts to edit out, making it practical for production voice experiences where quality, speed, and consistency matter. Its expressive conversational delivery provides strong pacing and real emotional range, tuned for support and agent transcripts. Alphanumerics such as order numbers, phone numbers, IDs, and emails are spoken naturally in every language, while context-aware English pronunciation helps words like read, bass, and bow land correctly from the surrounding text.
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Integrations
API:
Yes, Cartesia Sonic-3.5 offers API access
No integrations listed.
Company Information
Cartesia
Founded: 2023
United States
docs.cartesia.ai/build-with-cartesia/tts-models/latest
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Product Details
Platforms Supported
Cloud
Training
Documentation
Support
Online
Cartesia Sonic-3.5 Frequently Asked Questions
Q: What kinds of users and organization types does Cartesia Sonic-3.5 work with?
Cartesia Sonic-3.5 works with these users and organization types: Mid Size Business, Small Business, Enterprise, Freelance, Nonprofit, Government, and Startup.
Q: What languages does Cartesia Sonic-3.5 support in their product?
Cartesia Sonic-3.5 supports these languages: English.
Q: What kind of support options does Cartesia Sonic-3.5 offer?
Cartesia Sonic-3.5 offers support via online.
Q: Does Cartesia Sonic-3.5 have an API?
Yes, Cartesia Sonic-3.5 has an API.
Q: What type of training does Cartesia Sonic-3.5 provide?
Cartesia Sonic-3.5 provides training in the form of documentation.
