Cartesia Sonic

Sonic is the fastest human-like voice API.

5.0•19 reviews•

372 followers

Sonic is the fastest human-like voice API.

5.0•19 reviews•

372 followers

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Podcasting Tools

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AI Voice Agents

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Text-to-Speech Software

Sonic is a blazing fast, lifelike generative voice API (🚀 135ms model latency). Build high quality, real time voice experiences with a diverse voice library, instant voice cloning, voice mixing, and voice design with speed and emotion control.

Free Options

Launch tags:API•Artificial Intelligence•Audio

Launch Team / Built With

Wispr Flow: Dictation That Works Everywhere — Stop typing. Start speaking. 4x faster.

Stop typing. Start speaking. 4x faster.

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Cartesia Sonic

Maker

📌

Hi all! I'm Brandon, cofounder of Cartesia! We’re thrilled to be sharing our work on Sonic, the fastest human-like voice API. As a company, we’re obsessed with making intelligence faster, cheaper, and more accessible for everyone. And we believe that we need fundamentally new AI architectures to get there. We founded Cartesia to build long-lived real-time intelligence for every device, starting with a kernel of architectural innovation: state space models. My cofounders Karan, Albert, and Chris pioneered State Space Models (SSMs) in academia, and our models like S4 and Mamba are now widely adopted across industry and academia. Sonic is built on a new state space model architecture we’ve developed for low latency modeling of high resolution signals - more technical details here soon! Thanks so much for checking us out! Product Hunt users who sign up for a paid tier get 10% off for their first 2 months through next Friday, June 7. Email support@cartesia.ai with the subject line Cartesia x Product Hunt Promo to claim.

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2yr ago

@bclyang This is super impressive! It will unlock tremendous potential in building AI capabilities. Congrats!

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2yr ago

@bclyang Super fun product! Is there any plan to improve the writer's content in addition to man/woman/fun-like voice? It fits so well with the current product (ie. reading what the writer writes), might as well improve it while you are at it ;) Really cool! I need an avatar soon too :D Keep pushing the boundary here!

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2yr ago

@bclyang Hey Brandon - this is incredibly cool. Love the platform approach you and the team have taken to this API and the ability to have extremely low latency in creating interactive and conversational agents for Customer Service chatbots, voice agents, tutoring, or language services. Congrats on the launch - best of luck!

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2yr ago

@bclyang impressive! The model performance, the platform approach, and ecosystem potential. Love to see more use cases landed with frictionless experience across voice and text, and future video too. Congrats for the launch!

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2yr ago

Nice job. It might be valuable to offer a pay as you go option as well as subscription plans? Many people like to try and test before they dive in to something new?

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2yr ago

Cartesia Sonic

Maker

@nigel_powell7 Thanks for the suggestion! We currently offer 10k character / month for free for people to try! Subscriptions are required for voice cloning and design to prevent possible misuse.

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2yr ago

yep sounds cool congrats guys this could be the newest game changers. does its features includes personal voice cloning?

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2yr ago

This is the most impressive TTS demo I've seen. Usually you can have speed, quality, cost and only pick two (sometimes one) and Cartesia has all three with sonic. Amazing!

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2yr ago

This is impressive. It takes very large datasets and lots of model training to build this high quality of a voice API. This team is definitely leading the pack of pioneering new AI technology.

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2yr ago

Sonic is incredible! I cannot remember the last time that I was this impressed by a product. The Cartesia team is clearly onto something here. Highly recommend to everyone looking for ultra-realistic generative voice technology

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2yr ago

SiteForge - AI Website Wireframer

congrats on the launch. with sonic's diverse voice library, how do you ensure inclusion and diversity in the voice options available? what challenges did you face in implementing this?

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2yr ago

Cartesia Sonic

Maker

@mashy That's a great point! We're definitely prioritizing (and continuing to work on) expanding the voice options to be maximally inclusive and diverse! We've put in a lot of work to try to expand our training data to make sure a diverse set of voices work well.

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2yr ago

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5.0

Based on 19 reviews

Review Cartesia Sonic?

Reviewers describe Cartesia Sonic as easy to integrate and notably low-latency, with one user highlighting how simple it is to build on. Founder feedback, mainly from makers using it in other products, reinforces that view: the maker of MindPal says it helps voice agents feel natural and responsive, while founders of Guideless and Seagull praise its performance, multilingual voice quality, and reasonable cost. There is little critical feedback, so the picture is positive but narrow.

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Cartesia Sonic

Sonic is the fastest human-like voice API.

Sonic is the fastest human-like voice API.

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