About Cartesia
Cartesia builds ultra-low-latency voice AI models enabling real-time speech applications that feel natural and responsive. Its Sonic model achieves sub-50ms time-to-first-audio, making it the fastest production TTS API available. Cartesia's state space model (SSM) architecture is more efficient than transformer alternatives, enabling on-device and edge deployment. Backed by a16z and Index Ventures with $65M raised.
NeuronScore
Agent-Ready
MCP
Public API
Webhooks
OAuth2
SDK · TS
SDK · Py
SDKs: PythonJavaScript/TypeScript
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FAQ
When was Cartesia founded?
Cartesia was founded in 2023 in San Francisco, United States.
How much funding has Cartesia raised?
Cartesia has raised $65M across 1 rounds — most recently a Series a.
What is Cartesia's valuation?
Most recent disclosed valuation is $400M.
How much does Cartesia cost?
Cartesia pricing: Free. A free trial is available.
Where is Cartesia headquartered?
Cartesia is headquartered in San Francisco, United States.
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