GooglehexgradAudio matchupSpeech output
Gemini 3.1 Flash TTSvs.Kokoro-82M
Which model is better?
Gemini 3.1 Flash TTS is slightly ahead in independent tests, but the lead is not certain.
Independent testsHume AI
Gemini 3.1 Flash TTS0 of 1
Kokoro-82M0 of 1
Popularityout of 100
Gemini 3.1 Flash TTS44
Kokoro-82Mahead51
Weights and access
Gemini 3.1 Flash TTSproprietary
Kokoro-82Mopenopen, local
SizeParameters
Gemini 3.1 Flash TTSn/a
Kokoro-82M0.08 B
Pick Gemini 3.1 Flash TTS for
leaning Hume AI
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”.
Hume AI
Gemini 3.1 Flash TTS slightly aheadHume Real World VoiceEQ expressivity-reliability frontier score
Gemini 3.1 Flash TTS78.0
Kokoro-82M54.0
as of October 17, 2026
Source · latest October 17, 2026
All data side by side
Prices are verbatim from the provider, because audio models bill per minute, character or token.
| Gemini 3.1 Flash TTS | Kokoro-82M | |
|---|---|---|
| Task | Speech output | Speech output |
| Developer | hexgrad | |
| Status | Preview | Active |
| Released | n/a | December 25, 2024 |
| Weights | proprietary | open |
| Runs locally | no | yes |
| Parameters | n/a | 0.08 B |
| Popularity (out of 100) | 44 | 51 |