| Description |
| Summary |
Real-time speech and transcription model platform for voice agents, offering Sonic TTS, Ink STT, and enterprise voice-agent APIs.
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| Description |
Cartesia provides Sonic text-to-speech, Ink speech-to-text, voice-agent APIs and real-time speech models optimized for low latency, quality, enterprise-grade scale and integration into live voice-agent systems.
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| Positioning |
Real-time speech models purpose-built for voice agents
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| Key facts |
| HQ location |
San Francisco, CA, USA
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| Founded |
2023
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| Employee range |
51-200
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| Funding stage |
Series A
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| Company type |
Private
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| Pricing model |
freemium, usage based
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| Last updated |
Jun 21, 2026
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| Financials |
| Revenue estimate |
Unknown / not publicly disclosed
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| Valuation estimate |
Unknown
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| Investments |
$64M Series A announced Mar 2025; $91M total funding reported; later 2025/2026 round reports unverified
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| Relationships |
| Target customers |
Developers, AI agent companies and enterprises building real-time voice agents
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| Key competitors |
ElevenLabs, Deepgram, Hume AI, OpenAI, PlayHT
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| Known customers |
Quora, Cresta, Rasa, ServiceNow, Sierra
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| Segments & Industries |
| Segments |
AI Workflows, AI Agents, LLM Fine-tuning, AI Developer Tools, Knowledge & RAG, LLM Deployment, AI Quality & Observability, AI Governance & Risk, Call Analysis, Voice AI Agents, STT/TTS Infrastructure, Analytics & BI
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