Cartesia AI, Inc. is a real-time generative AI and voice-model company co-founded by Karan Goel, Albert Gu, Arjun Desai, Brandon Yang, and Chris Ré. Cartesia's Twitter Score is 26 out of 1000 as of September 2026, ranking #38,058 (top 10%) among 486,860 tracked accounts.
Cartesia builds a product stack centered on three core offerings: Ink for speech-to-text, Sonic for text-to-speech, and Line, a voice-agent platform. Together these products position the company at the intersection of real-time audio AI and conversational agent infrastructure. Cartesia has attracted backing from a broad group of investors, including Index Ventures, Kleiner Perkins, Lightspeed, General Catalyst, Greycroft, Factory, Conviction, SV Angel, Dell Technologies Capital, NVIDIA, Samsung Ventures, and A*.
Cartesia raised a $27 million seed round led by Index Ventures, announced in December 2024, followed by a $64 million Series A led by Kleiner Perkins, announced in March 2025. The account has published 533 posts on the platform and has 15,222 followers as of September 2026. Cartesia has been mentioned by 71 accounts, with 104 total mentions.
Who follows Cartesia on X?
The accounts that follow Cartesia include 140 founders, 45 angel investors, 24 influencers and 6 VCs, among them Tarun Chitra, Rune, Alex Atallah, Martin Shkreli, Andy and Sarah Guo.