Data read October 27, 2026
Cartesia TTS APIs in 2026: 3 models, speed tier and languages
Cartesia has 3 models in the database. 2 of the 3 are in the multilingual speed ranking; the others are not tagged multilingual by Coval or are not measured by it.
Every measure is copied from a public benchmark with its source on the model page; a measure no benchmark holds is shown as n/a, never estimated.
How the rows are ordered. Ranked models first, in ranking order (speed tier, then P95, ties by median); the 1 models without a rank follow alphabetically.
| Rank | Model | Speed tier From the Coval P95 | P95 (ms) 1 turn in 20 is slower | Languages tested | Listener Elo Artificial Analysis, with 95% interval | Price per 1M characters List price; a range when sources differ |
|---|---|---|---|---|---|---|
| 14 |  Cartesia Sonic 3.6 | Visible delay | 374.4 | 9 | 1,292 ±14 | $39.20 to $50 |
| 15 |  Cartesia Sonic 3.5 | Visible delay | 390.5 | 15 | 1,190 ±11 | $39.20 to $50 |
| not ranked |  Cartesia Sonic 3 | n/a | n/a | 9 | 1,054 ±11 | $49 to $50 |
Frequently asked questions
- Which Cartesia TTS model is fastest?
- Cartesia Sonic 3.6 is the best-ranked Cartesia model, rank 14, with a P95 of 374.4 ms.
- How many Cartesia TTS models are covered?
- 3 models; 2 are ranked.