Voice, video & media · San Francisco, US · founded 2023
Cartesia: who founded it, who funds it
Cartesia is a San Francisco voice and video AI lab founded in 2023 by Karan Goel, Albert Gu, Chris Ré, Arjun Desai and 1 others, who came from Stanford and CMU. What it is building: real-time on-device multimodal AI on state-space models; the Sonic voice models are integrated by developers. It has raised $164M in disclosed rounds, most recently a Series B of $100M in October 2025, led by Kleiner Perkins. It sells access through an API.
- Founders
- Karan Goel (ex-Stanford), Albert Gu (ex-CMU), Chris Ré (ex-Stanford), Arjun Desai (ex-Stanford), Brandon Yang (ex-Stanford)
- Founders from
- ex-Stanford, ex-CMU
- Location
- San Francisco, US (North America)
- Valuation
- ·
- Raised
- $164M disclosed
- Investors
- Kleiner Perkins lead, Lightspeed, Index Ventures
- What ships
- Sonic-3 voice model, Line voice agents.
Rounds
| Date | Round | Amount | Valuation | Lead | Source |
|---|---|---|---|---|---|
| Oct 28, 2025 | Series B | $100M | · | Kleiner Perkins | research.contrary.com |
| Mar 11, 2025 | Series A | $64M | · | Kleiner Perkins | fortune.com |
Sources
- Cartesia cartesia.ai
News
- Sep 9, 2026
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Jan 21, 2026
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Nov 25, 2025
+1 more coverage
- PR Newswire Tencent Cloud and Cartesia Announce Strategic Partnership to Advance Real-Time Voice AI E…
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Oct 29, 2025
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Mar 11, 2025
+1 more coverage
- Yahoo Finance Exclusive: Cartesia, voice AI startup, raises $64 million Series A
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Dec 30, 2024
Investors who back other labs here
- Lightspeed also: Reflection AI, Skild AI, Ineffable Intelligence, Ricursive Intelligence
- Kleiner Perkins also: Harmonic, Mirendil
- Index Ventures also: Enigma, Inherent
Same research area
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