// about Cartesia
Cartesia builds state-space-model-based voice AI optimised for real-time, ultra-low-latency speech synthesis — producing natural voices in under 90ms end-to-end. Its Sonic model is designed for voice agents, phone bots, and interactive applications where a 500ms delay would break the conversational feel. Cartesia's API supports voice cloning, emotion control, and multilingual synthesis, and it's become a preferred TTS provider for companies building real-time voice AI products where ElevenLabs' latency is too high.
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