Cartesia releases Sonic-3.6, claiming top spot on TTS leaderboards

HazyResearch · x · 2026-08-18

Cartesia has launched Sonic-3.6, its most lifelike TTS model yet, supporting 44 languages just three months after Sonic-3.5. The company claims it ranks #1 on ArtificialAnalysis across both provider and controlled voice streaming leaderboards, highlighting best-in-class voice quality. The model is available in beta starting today.

Related event: Cartesia Sonic 3.6 Tops TTS Leaderboards at Nearly 3x Speed(3 posts)→

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