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Cartesia releases Sonic-3.6 text-to-speech model, achieving top rankings on Artificial Analysis benchmarks

Model release Provisional 95% confidence first seen

Cartesia released Sonic-3.6, a streaming text-to-speech model built on state space models that achieved first-place rankings on Artificial Analysis speech leaderboards with sub-90ms latency to first audio. The model supports 44 languages and is available as a hosted API starting at $5 per month, priced at $49 per million characters, undercutting competitors like ElevenLabs.

Cartesia Sonic-3.6 Artificial Analysis Eleven v3 ElevenLabs

Source coverage

Cartesia Ships Sonic-3.6: A Streaming TTS Model That Now Leads Both Artificial Analysis Speech Arenas MarkTechPost Cartesia's Sonic-3.6 voice model ranked #1 on Artificial Analysis X newsletter

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