Cartesia

Cartesia develops low-latency foundation models built on state-space architectures, with speech as its first commercial workload. Its Sonic models target real-time conversational agents where latency is the binding constraint. It released Sonic and its production API in 2024 and shipped upgraded generations through 2026.

Ecosystem functionAn architecture bet applied to real-time inference, where state-space models have a structural latency advantage.

Business modelReal-time voice APIs