Cartesia

Cartesia develops Sonic: a generative AI model delivering high-fidelity text-to-speech with sub-100ms latency for real-time voice applications.

Cartesia specializes in real-time multimodal intelligence, led by its flagship Sonic model. The system achieves industry-leading speeds (under 100 milliseconds of latency) to provide natural, expressive voice synthesis across dozens of languages. Developers use the Cartesia API to power interactive agents, gaming NPCs, and accessibility tools with lifelike audio quality. By prioritizing performance and scale, the platform eliminates the lag found in traditional speech synthesis.

https://cartesia.ai