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Cartesia Raises $64M to Advance Real-Time Voice AI
2 min read Cartesia Secures $64M Series A to Advance Voice AI Innovation March 11, 2025 16:35
Cartesia, a voice AI startup, has raised $64 million in a Series A funding round led by Kleiner Perkins, bringing its total funding to $91M. Other investors include Index Ventures, Lightspeed, A*, Factory, Greycroft, Dell Technologies Capital, and Samsung Ventures.
What is Cartesia?
- Founded in 2023 out of Stanford's AI Lab by Karan Goel, Arjun Desai, Brandon Yang, Albert Gu, and Stanford professor Chris Ré.
- Specializes in real-time generative AI models for voice applications.
- Flagship model: Sonic – delivers ultra-low latency, cutting response time from 90ms to 45ms.
- Over 10,000 customers, including Quora, Cresta, and Rasa.
What’s Next for Cartesia?
With the new funding, Cartesia plans to:
✅ Expand its team
✅ Enhance its platform with next-gen voice AI models
✅ Scale its infrastructure
Introducing Sonic 2.0 & Sonic Turbo
- Sonic 2.0: Features 90ms time-to-first-audio (TTFA) and improved accuracy in challenging transcripts.
- Sonic Turbo: An extreme low-latency model designed for ultra-fast voice interactions.
Why It Matters
Cartesia is pioneering state-space model (SSM) architecture, a more efficient and cost-effective alternative to traditional transformer-based AI models.
Their goal? Ubiquitous, real-time voice intelligence on any device.
With this funding and cutting-edge technology, Cartesia is emerging as a key player in the future of voice AI.
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