The fastest, ultra-realistic voice AI platform
Powered by high performance State Space Model technology. Purpose-built for developers.
Welcome to Cartesia. It’s great to meet you!
Perfect for real-time voice agents
Best-in-class pronunciations: Get complex phone numbers, addresses, and IDs right every time.
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
Developers love how easy Cartesia makes it to incorporate real-time AI voices , voice cloning , voice infilling and more into their applications.
Teams trust Cartesia to deliver the lowest-latency, highest-quality voice AI for interactive voice apps.
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.
Sonic
The flagship State Space Model behind our seamless, ultra-realistic AI voices.
Custom Deployments
Deploy voice AI anywhere—whether it’s on-prem or on-device.
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.”
Kwindla Hultman
CEO
“Cartesia Sonic is the best voice model today for real-time multimodal use cases.”
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.”
Vipul Ved Prakash
CEO
“Cartesia is leading the charge of building efficient, multimodal models from first principles, starting with their Sonic TTS model.”
Hassaan Raza
CEO
“Cartesia’s Sonic model is a game-changer [...] Its ultra-low latency of 90ms and high-quality voice generation have enabled us to create truly immersive real-time conversations.”
Pioneering new architectures for the next generation of AI.
All publications
Enterprise-grade Security. From Cloud to Local.
Your data is protected by industry-leading SOC 2 Type 2, HIPAA, and PCI compliance standards, whether in our 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.
