Fastest AI voice conversion with natural voices

AI voice conversion with unmatched accuracy and natural sound

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Trusted by 50K+ Customers

Explore AI voice conversion capabilities

Our AI voice conversion offers lifelike transformations with multilingual support and no distortions.

Multilingual support

Access a wide range of voices in multiple languages, making your content globally accessible.

Speed and emotion control

Ensure accurate voice transformations with voice speed and emotion control

Ultra realistic voices

Experience real-time voice changes with our ultra realistic voices, delivering human-sounding speeches.

Global accessibility

Make your content accessible worldwide with our multilingual AI voice conversion, supporting 15 languages.

Seamless Integration

Enjoy seamless integration of AI voice conversion into your applications, enhancing user experience.

Lifelike transformations

Achieve lifelike voice transformations with our AI voice conversion, ensuring natural sound.

Instantly change your voice from a 3 second clip
Scale up to hours of content with Fine-Tuning

Source

Oracle

Brighton

Source

Hero Voice

Robotic Male

Source

Pippa

Overlord

"Cartesia’s Sonic model is a game-changer for our Conversational Video Interface. Its ultra-low latency of 90ms and high-quality voice generation have enabled us to create truly immersive real-time conversations with AI digital twins. The natural voices and voice design capabilities have elevated our product to new heights."
— Hassaan Raza, Co-Founder and CEO, Tavus

Instantly change your voice from a 3 second clip
Scale up to hours of content with Fine-Tuning

Source

Oracle

Brighton

Source

Hero Voice

Robotic Male

Source

Pippa

Overlord

"Cartesia’s Sonic model is a game-changer for our Conversational Video Interface. Its ultra-low latency of 90ms and high-quality voice generation have enabled us to create truly immersive real-time conversations with AI digital twins. The natural voices and voice design capabilities have elevated our product to new heights."
— Hassaan Raza, Co-Founder and CEO, Tavus

Instantly change your voice from a 3s clip

Source

Oracle

Brighton

Source

Hero Voice

Robotic Male

Source

Pippa

Overlord

"Cartesia’s Sonic model is a game-changer for our Conversational Video Interface. Its ultra-low latency of 90ms and high-quality voice generation have enabled us to create truly immersive real-time conversations with AI digital twins. The natural voices and voice design capabilities have elevated our product to new heights."
— Hassaan Raza, Co-Founder and CEO, Tavus

Make your content accessible to a global audience

Sonic supports seamless speech in 15 languages, with more added every release.

15 Languages

From Japanese to German—any language you need, we’ve got it.

Localization

Localize a given voice to any accent or language.

German

English

Spanish

French

Japanese

Portuguese

Chinese

Italian

Make your content accessible to a global audience

Sonic supports seamless speech in 15 languages, with more added every release.

15 Languages

From Japanese to German—any language you need, we’ve got it.

Localization

Localize a given voice to any accent or language.

German

English

Spanish

French

Japanese

Portuguese

Chinese

Italian

Make your content accessible to a global audience

Sonic supports seamless speech in 15 languages, with more added every release.

15 Languages

From Japanese to German—any language you need, we’ve got it.

Localization

Localize a given voice to any accent or language.

German

English

Spanish

French

Japanese

Portuguese

Chinese

Italian

What our customers say

Join the growing list of companies opting for Sonic.

Try it now

Talk to Sales

Try it now

Talk to Sales

Try it now

Talk to Sales

“Poe brings together the world's best AI, all in one place. 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.”

Spencer Chan, Head of Poe Product, Quora

"Gaming has always been where communities form - from my generation's World of Warcraft and Runescape to today's Roblox and Minecraft. As games evolve into social platforms, AI characters need to feel genuinely human in both their responsiveness and emotional depth. Cartesia's technology, with its ultra-low latency, natural voices, and precise emotional control, helps us create truly immersive worlds where AI characters feel alive and authentic."
Peggy Wang, Co-Founder and CTO, Ego

"Cartesia’s Sonic model is a game-changer for our Conversational Video Interface. Its ultra-low latency of 90ms and high-quality voice generation have enabled us to create truly immersive real-time conversations with AI digital twins. The natural voices and voice design capabilities have elevated our product to new heights."
Hassaan Raza, Co-Founder and CEO, Tavus

Lifelike, expressive voices for every use case

Support

Power support experiences that delight your customers.

Gaming

Bring your storytelling to life with immersive voices

Content

Create content that engages viewers and drives clicks.

Media

Narrate content for podcasts, news, and publishing.

Healthcare

Empower healthcare with voices that patients trust.

Sales

Scale sales with lifelike voices that lead to conversions.

Voice Agents

Build responsive AI voice agents for any use case.

Dubbing

Go global with localized voices and accents for every language.

Avatars

Create expressive, relatable AI avatars for any use case.

Logistics

Automate complex logistics with voice-enabled systems.

Recruiting

Screen candidates with AI-powered voice interviews.

Accessibility

Make your content accessible to anyone, anywhere.

Lifelike, expressive voices for every use case

Support

Power support experiences that delight your customers.

Gaming

Bring your storytelling to life with immersive voices

Content

Create content that engages viewers and drives clicks.

Media

Narrate content for podcasts, news, and publishing.

Healthcare

Empower healthcare with voices that patients trust.

Sales

Scale sales with lifelike voices that lead to conversions.

Voice Agents

Build responsive AI voice agents for any use case.

Dubbing

Go global with localized voices and accents for every language.

Avatars

Create expressive, relatable AI avatars for any use case.

Logistics

Automate complex logistics with voice-enabled systems.

Recruiting

Screen candidates with AI-powered voice interviews.

Accessibility

Make your content accessible to anyone, anywhere.

Lifelike, expressive voices for every use case

Support

Power support experiences that delight your customers.

Gaming

Bring your storytelling to life with immersive voices

Content

Create content that engages viewers and drives clicks.

Media

Narrate content for podcasts, news, and publishing.

Healthcare

Empower healthcare with voices that patients trust.

Sales

Scale sales with lifelike voices that lead to conversions.

Voice Agents

Build responsive AI voice agents for any use case.

Dubbing

Go global with localized voices and accents for every language.

Avatars

Create expressive, relatable AI avatars for any use case.

Logistics

Automate complex logistics with voice-enabled systems.

Recruiting

Screen candidates with AI-powered voice interviews.

Accessibility

Make your content accessible to anyone, anywhere.

How to use AI voice conversion effectively

Step One

Step 1: Visit Cartesia's website and explore the AI voice conversion options available.

Step Two

Step 2: Select your desired voice and language settings. Experience the fast, lifelike transformations with our real-time AI voice conversion client.

Step Three

Step 3: Apply the voice changes to your content and enjoy the seamless integration. Try out Cartesia's real-time AI solutions and explore their documentation.