The fastest, ultra-realistic voice AI platform

The fastest, ultra-
realistic voice AI platform

Read the docs

Developers

love

how

easy

Cartesia

makes

incorporate

real-time

voices

, voice cloning

, voice

infilling

and

into

their

applications.

Teams

trust

Cartesia

deliver

the

lowest-latency,

highest-quality

voice

for

interactive

voice

apps.

Developers

love

how

easy

Cartesia

makes

incorporate

real-time

voices

, voice cloning

, voice

infilling

and

into

their

applications.

Teams

trust

Cartesia

deliver

the

lowest-latency,

highest-quality

voice

for

interactive

voice

apps.

Developers

love

how

easy

Cartesia

makes

incorporate

real-time

voices

, voice cloning

, voice

infilling

and

into

their

applications.

Teams

trust

Cartesia

deliver

the

lowest-latency,

highest-quality

voice

for

interactive

voice

apps.

Perfect for real-time voice agents

Best-in-class pronunciations: Get complex phone numbers, addresses, and IDs right every time.

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HUMAN

CARTESIA AGENT

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HUMAN

CARTESIA AGENT

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HUMAN

CARTESIA AGENT

Low-latency. Cartesia Sonic has the lowest latency of any AI voice model—meaning your voice agents can spend more time understanding, thinking, and acting on user inputs.

Best-in-class pronunciations. Get complex phone numbers, addresses, and IDs right every time.

Best-in-class
AI voice cloning

Leverage AI voice cloning and AI voice changer for high-fidelity, realistic voice replication with unmatched accuracy.

Voice Cloning

Voice Changer

Text-to-Speech

SOURCE

CLONE

Voice Cloning

Voice Changer

Text-to-Speech

SOURCE

CLONE

Voice Cloning

Voice Changer

Text-to-Speech

SOURCE

CLONE

Seamless integrations

Integrate Cartesia with Twilio, Pipecat, LiveKit, or Rasa with ease.

Find out how

Speak every language

Sonic supports native speech in 15 languages. Localize a given voice to any accent or language.

Try your language

English

American

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English

American

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English

American

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Spanish

Latin

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Spanish

Latin

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Spanish

Latin

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French

Standard

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French

Standard

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French

Standard

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Portuguese

Brazilian

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Portuguese

Brazilian

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Portuguese

Brazilian

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Hindi

Chinese

Russian

Dutch

Japanese

Turkish

Korean

German

Swedish

Italian

Polish

Coming soon...

Sonic

The flagship State Space Model behind our seamless, ultra-realistic AI voices.

Learn more

Capabilities

Custom Deployments

Deploy voice AI anywhere—whether it’s on-prem or on-device.

Learn more

Reach out

Meet the teams we empower

Discover success stories

Bob Summers
CEO
“Sonic is the only product in existence with model latency of less than 100 ms, outperforming its next best alternative by a factor of four.”
Read the full story
Kwindla Hultman
CEO
“Cartesia Sonic is the best voice model today for real-time multimodal use cases.”
Read the full story
Spencer Chan
Head of Poe Product
“With Cartesia's Sonic model, users can interact with a wide range of high-quality, human-like voices in multiple languages, enhancing their experience on our platform.”
Read the full story

Meet the teams we empower

Discover success stories

Bob Summers
CEO
“Sonic is the only product in existence with model latency of less than 100 ms, outperforming its next best alternative by a factor of four.”
Read the full story
Kwindla Hultman
CEO
“Cartesia Sonic is the best voice model today for real-time multimodal use cases.”
Read the full story
Spencer Chan
Head of Poe Product
“With Cartesia's Sonic model, users can interact with a wide range of high-quality, human-like voices in multiple languages, enhancing their experience on our platform.”
Read the full story

Meet the teams we empower

Discover success stories

Jon Doe
CEO
“One of our healthcare customers reported that their patients were 4x more likely to stay on a call after switching to Cartesia's voices compared to their previous text-to-speech provider.”
Bob Summers
CEO
“Sonic is the only product in existence with model latency of less than 100 ms, outperforming its next best alternative by a factor of four.”
Kwindla Hultman
CEO
“Cartesia Sonic is the best voice model today for real-time multimodal use cases.”

Pioneering new architectures for the next generation of AI.

All publications

Feb 17, 2025

Getting Started

Feb 10, 2025

What’s New

Jan 13, 2025

Styling Elements

Jan 3, 2025

Importing Content

Enterprise-grade Security. From Cloud to Local.

Your data is protected by industry-leading SOC 2 Type 2 and HIPAA compliance standards, whether in the cloud or on-premises.

Our mission

We aim to build the next generation of AI. Ubiquitous, interactive intelligence that runs wherever you are. We're pioneering the model architectures that will make it possible.

Meet the team

Careers