Cartesia, a San Francisco, CA-based voice AI startup, has raised $64 million in Series A funding, bringing its total funding to $91 million.
Investors
The round was led by Kleiner Perkins, with participation from Index Ventures, Lightspeed, A*, Factory, Greycroft, Dell Technologies Capital, and Samsung Ventures.
Kleiner Perkins is a venture capital firm founded in 1972 and based in Menlo Park, California. The firm invests in early-stage, incubation, and growth companies across technology, life sciences, and green tech.
Cartesia Use of Funds
The funding will be used to continue developing Cartesia’s AI models, reduce computational costs, and scale their solutions for broader use in applications like customer support and digital avatars.
About Cartesia
Founded by Karan Goel, Arjun Desai, Brandon Yang, Albert Gu, and Chris Ré, Cartesia focuses on developing real-time generative AI models specifically for voice AI. Its flagship product, Sonic, is a voice model that generates expressive, lifelike speech in real-time, designed to reduce latency and improve the responsiveness of voice interactions. Cartesia's voice AI technology, particularly its model Sonic, is being used by over 10,000 customers, including companies like Quora, Cresta, and Rasa.
Funding Details
Company: Cartesia AI, Inc.
Raised: $64.0M
Round: Series A
Funding Date: March 2025
Lead Investor: Kleiner Perkins
Additional Investors: Index Ventures, Lightspeed, A*, Factory, Greycroft, Dell Technologies Capital, Samsung Ventures
Company Website: https://cartesia.ai/
Software Category: Voice AI
Source: https://fortune.com/2025/03/11/exclusive-cartesia-voice-ai-startup-raises-64-million-series-a/