GoogleAudio matchupSpeech output
Gemini 3.1 Flash TTSvs.Gemini 3.8 Flash-Lite TTS
Which model is better?
Gemini 3.8 Flash-Lite TTS does better in independent tests, while Gemini 3.1 Flash TTS is more popular.
Pick Gemini 3.1 Flash TTS for
Pick Gemini 3.8 Flash-Lite TTS for
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”.
VoiceArena
Gemini 3.8 Flash-Lite TTS aheadGemini 3.8 Flash-Lite TTS is clearly ahead in 5 of 8 subtests, Gemini 3.1 Flash TTS in none. 3 are level.
VoiceArena TTS Elo: Vietnamese
95 % ranges 1,081 to 1,101 and 1,124 to 1,158, as of October 28, 2026
VoiceArena TTS Elo: Mexican Spanish
95 % ranges 1,072 to 1,100 and 1,115 to 1,155, as of October 28, 2026
VoiceArena TTS Elo: Arabic MSA
95 % ranges 1,112 to 1,132 and 1,145 to 1,181, as of October 28, 2026
Show all 8 subtests
| Subtest | Gemini 3.1 Flash TTS | Gemini 3.8 Flash-Lite TTS | Verdict |
|---|---|---|---|
| VoiceArena TTS Elo: Vietnamese | 1,091 | 1,141 | Gemini 3.8 Flash-Lite TTS ahead |
| VoiceArena TTS Elo: Mexican Spanish | 1,086 | 1,135 | Gemini 3.8 Flash-Lite TTS ahead |
| VoiceArena TTS Elo: Arabic MSA | 1,122 | 1,163 | Gemini 3.8 Flash-Lite TTS ahead |
| VoiceArena TTS Elo: Brazilian Portuguese | 1,089 | 1,127 | Gemini 3.8 Flash-Lite TTS ahead |
| VoiceArena TTS Elo: US English | 1,054 | 1,082 | Gemini 3.8 Flash-Lite TTS ahead |
| VoiceArena TTS v1, US English, All, Elo | 1,054 | 1,083 | level |
| VoiceArena TTS Elo: Hindi | 1,078 | 1,065 | level |
| VoiceArena TTS Elo: Japanese | 1,130 | 1,136 | level |
Source · latest October 28, 2026
Artificial Analysis
Gemini 3.8 Flash-Lite TTS aheadArtificial Analysis Provider Voice Arena preference
95 % ranges 1,202 to 1,224 and 1,241 to 1,267, as of November 3, 2026
Source · latest November 3, 2026
Speko
levelSpeko TTS number-reading score
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 | Gemini 3.8 Flash-Lite TTS | |
|---|---|---|
| Task | Speech output | Speech output |
| Developer | ||
| Status | Preview | Active |
| Released | n/a | September 22, 2026 |
| Weights | proprietary | n/a |
| Runs locally | no | no |
| Price | n/a | $0.50 per 1M text tokens through December 31, 2026, then $1 per 1M text tokens from January 1, 2027 |
| Popularity (out of 100) | 44 | 0 |