Cartesia

cartesia.ai/

Cartesia builds real-time voice AI models — Sonic for text-to-speech, Ink for speech-to-text, and a Managed Agents platform for voice agents — built on state-space-model research (citing its own work on Mamba and H-Nets) rather than standard transformer architectures. The hero claims the #1 ranking on both the Artificial Analysis Speech Arena and Speech-to-Text leaderboards, and lets a visitor talk directly to a live demo voice agent named Skylar embedded in the page. Deployment is pitched across cloud, on-premise, and on-device with the line "Deploy AI anywhere. Own it everywhere," and customer logos include ServiceNow, Retell, and Quora.

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Cartesia | AI that learns and interacts like humans

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Updated

Sep 22, 2026

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