#1-ranked for realtime voice. Models and agents built on frontier research.
Voice agents that answer and make calls, and the speech models behind them, in one API fast enough for live conversation.
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Warm and unhurried
Join the teams making the switch to Cartesia
Voices callers love talking to. EliseAI runs 5M+ voice calls a month on Cartesia.
We love working with Cartesia because they really listen and iterate based on what we need.
The full stack for interactive intelligence
Speech models and the voice agents built on them, running on State Space Models for low latency at scale.
The fastest, most accurate streaming transcription model.
The fastest, ultra-realistic voice synthesis model.
Voice agents as fast and accurate as the models powering them
The fastest, most customizable platform for building and shipping enterprise voice agents, powered by our models.
Pioneering AI research:Architectures that learn through real-world interaction
Our team has pioneered breakthrough AI architectures, including state space models (SSMs), Mamba & H-Nets. Our research manifests our mission — we architect AI that learns from and interacts with the world like humans do.
Our research
Deploy AI anywhere.Own it everywhere.
The same models and agents across cloud, on-premise, and on-device. Inference runs in-region — keeping you within your latency envelope, data residency obligations, and compliance frameworks.
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Connect with a member of our team and learn how Cartesia can help you build world-class voice experiences.
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Build a voice agent or call our models through the API, and go live in minutes.
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Build the future of interactive intelligence
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