18 August 2026

Cartesia releases Sonic-3.6 text-to-speech model in 44 languages

Cartesia, a voice AI startup, released Sonic-3.6 in beta, a model that converts written text into spoken audio.
The model supports 44 languages, expanding accessibility beyond English-only text-to-speech tools.
Sonic-3.6 ranked highest on Artificial Analysis' voice quality leaderboards, a benchmark ranking different text-to-speech systems.

How it was covered

Voice AI startup Cartesia released Sonic-3.6 in beta, a new text-to-speech model covering 44 languages that tops Artificial Analysis' voice leaderboards.