Cartesia Sonic

Name: Cartesia Sonic
Rating: 5.0 (18 reviews)

Sonic is the fastest human-like voice API.

5.0•18 reviews•

360 followers

Sonic is the fastest human-like voice API.

5.0•18 reviews•

360 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

Framer — Launch websites with enterprise needs at startup speeds.

Launch websites with enterprise needs at startup speeds.

Promoted

Llanai

Congratulations ! your low latency is amazing. When do you expect to release a model for Spanish ?

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2yr ago

Cartesia Sonic

Maker

@aris_nakos Hi Aris, thanks for the great question! We're actively working on a model, would love to have you as a beta tester. Feel free to e-mail me at brandon [AT] cartesia.ai.

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2yr ago

Great work Brandon and team! Very impressed with your progress!

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2yr ago

Cartesia Sonic

Maker

@matt_lehmann Thanks for all the support and feedback!!

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2yr ago

Looks very cool! A lot of folks out there are creating voice experiences. It sounds like speed and accuracy (in terms of sounding lifelike) is a big differentiator? Would love to hear a little more from y'all about what you think some of the key features are. Congrats on the launch!

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2yr ago

Cartesia Sonic

Maker

@sg2 Thanks for the great question! One key feature is extremely low latency, compared to other offerings of this quality - this makes it particularly useful for interactive applications (e.g. conversational agents, gaming, tutors). Based on our benchmarks, we also think it has better pronunciation on hard examples (e.g. numbers, dates, acronyms, initialisms), highly diverse and expressive voices, and the ability to design voices (by mixing two similar voices and/or adjusting the emotion and pace of a given voice).

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2yr ago

@bclyang this sounds amazing. We're building a wearables-based agent to interpret conversation and provide audio feedback. Will give this a proper look. Thanks

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1mo ago

Lenny’s Podcast

Go Cartesia!

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2yr ago

Congrats Cartesia team!! This is super impressive :)

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2yr ago

congrats Cartesia! Super impressive features. Can’t wait to play around with it!

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2yr ago

I've never seen anything like this, the voices all sound so real! Incredible!

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2yr ago

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5.0

Based on 18 reviews

Review Cartesia Sonic?

Reviews praise Cartesia Sonic’s reliability, ultra-low latency, and natural-sounding output, with easy integration and strong multilingual coverage. Founders highlight specific wins: makers of

Daily.co

note dependable real-time performance for live experiences; makers of

Tavus

emphasize high-quality cloning and expressive control at scale; makers of

Martin

cite fast, consistent synthesis for productized use cases. Other founders mention strong quality-to-cost value and rapid translated speech. Users echo quick setup and smooth APIs. Some seek broader voice options, but overall sentiment is highly positive.

+15

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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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