CartesiahexgradAudio matchupSpeech output
Sonic 3.6vs.Kokoro-82M
Which model is better?
Sonic 3.6 does better in independent tests, while Kokoro-82M is available with open weights.
Independent testsArtificial Analysis
Sonic 3.6ahead1 of 1
Kokoro-82M0 of 1
Popularityout of 100
Sonic 3.639
Kokoro-82Mahead51
Weights and access
Sonic 3.6proprietary
Kokoro-82Mopenopen, local
SizeParameters
Sonic 3.6n/a
Kokoro-82M0.08 B
Pick Sonic 3.6 for
Artificial Analysis
Pick Kokoro-82M for
open weightsruns locallymore popular
Shared tests
Independent evaluators and leaderboards only, the newest shared snapshot per evaluator. With 95 % ranges a lead counts when they do not overlap; for hit rates, when it holds in a 95 % test. Without any uncertainty figure at most “slightly ahead”.
Artificial Analysis
Sonic 3.6 aheadArtificial Analysis Provider Voice Arena preference
Sonic 3.61,293
Kokoro-82M1,061
95 % ranges 1,280 to 1,306 and 1,050 to 1,072, as of November 3, 2026
Source · latest November 3, 2026
All data side by side
Prices are verbatim from the provider, because audio models bill per minute, character or token.
| Sonic 3.6 | Kokoro-82M | |
|---|---|---|
| Task | Speech output | Speech output |
| Developer | Cartesia | hexgrad |
| Status | Active | Active |
| Released | n/a | December 25, 2024 |
| Weights | proprietary | open |
| Runs locally | no | yes |
| Parameters | n/a | 0.08 B |
| Popularity (out of 100) | 39 | 51 |