Cartesia Sonic 3
Proprietary · Cartesia
Cartesia Sonic 3 is a proprietary text-to-speech (TTS) API from Cartesia, measured by two independent benchmarks: Artificial Analysis and Speko.
Spanish German French Portuguese
+11
Provider
Cartesia TTS models
3 text-to-speech (TTS) models, ordered speed first: by speed tier and P95 time to first audio on Coval, then the models Coval does not measure, by name. No combined score.
Data checked on October 22, 2026 · updated after each benchmark capture
Cartesia Sonic 3.5
Visible delay Proprietary · Cartesia
380.5 ms P95
280.9 ms median
Cartesia Sonic 3.5 is a proprietary text-to-speech (TTS) API from Cartesia, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+18
Cartesia Sonic 3.6
Visible delay Proprietary · Cartesia
379.9 ms P95
295.5 ms median
Cartesia Sonic 3.6 is a proprietary text-to-speech (TTS) API from Cartesia, measured by three independent benchmarks: Artificial Analysis, Coval and Speko.
Spanish German French Portuguese
+12