Automate voice localization with real-time, natural AI speech

Quickly generate speech in multiple different languages, reduce recording expenses, and support global ventures with a secure, lightning quick voice AI platform.

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Key uses for Cartesia voice AI in localization

Personalize voice agents and ads

For businesses with global reach, you can easily deploy language-specific customer support agents and locale-ready campaigns to make sure everyone gets the message.

Live-translate meetings

Nearly instantly stream translated audio of speakers so everyone in globe-spanning meetings can speak their native tongue, and everyone can follow along.

Dub media

Help prepare movies, TV shows, video games, and other media for global markets without booking expensive and time-consuming studio recording sessions.

Low-latency, dynamic voices for localization

Simplified operations

Audio localization is a time- and resource-intensive process, even for the smallest of projects. With Cartesia, you can create translated audio for a wide range of languages—without the hassle of casting and booking studio time, often across multiple time zones.

Personalization made possible

Speaking to people in their native tongue has never been easier. Cartesia's localized voices allow you to offer multiple languages in scenarios where going beyond one or two was formerly cost-prohibitive. Help desks can provide support in dozens of languages. Media can be dubbed and made available in practically any market. And meetings and streamed events can be accessible globally in attendees' primary language.

True localization

Do more than just translate. Cartesia's voices include language variants—like European and Brazilian Portuguese—so your audience can hear not just the language, but the accents and pronunciations they're used to.

Trusted by leading enterprises. Speaking from experience.

Discover success stories

“Cartesia’s state-space models bring enterprise-grade speed and quality to our AI Voice Agents… making it possible for businesses to deploy secure, scalable voice agents that can understand, act, and adapt in real time.”

Ravi Krishnamurthy

VP Product

“Cartesia Sonic 3.5 has become one of the top-performing models for us by combining low latency with natural pacing… helping us deliver strong voice quality across a growing set of languages where other models often fall short.”

Lydia Zarcone

Voice Product Manager

“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

“Cartesia is leading the charge of building efficient, multimodal models from first principles, starting with their Sonic TTS model.”

Vipul Ved Prakash

CEO

“We didn’t switch to Sonic 3.5 because it was incrementally better, we switched because nothing else came close… we’ve seen a 2.9% lift in our conversion and a 12.2% increase in customer engagement.”

Akshay Ramaswamy

Staff Product Manager

“Sonic 3.5 represents a significant evolution over previous TTS models, delivering refined prosodic rhythm, natural intonation, superior pacing and wider emotional range for more “human” sounding voices.”

Tyler Brown

Voice Expert