GoogleElevenLabsAudio matchupSpeech output
Gemini 3.8 Flash TTSvs.Eleven v4
Which model is better?
Gemini 3.8 Flash TTS and Eleven v4 each lead in different tests.
Pick Gemini 3.8 Flash TTS for
Pick Eleven v4 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”.
Askable Labs VOICE-H
Eleven v4 aheadEleven v4 is clearly ahead in 4 of 12 subtests and slightly in 3, Gemini 3.8 Flash TTS in none. 5 are level.
Askable Labs VOICE-H pronunciation accuracy Elo (French)
95 % ranges 1,092 to 1,144 and 1,258 to 1,319, as of October 17, 2026
Askable Labs VOICE-H emotion/tone Elo (French)
95 % ranges 1,111 to 1,165 and 1,276 to 1,346, as of October 17, 2026
Askable Labs VOICE-H naturalness Elo (French)
95 % ranges 1,089 to 1,147 and 1,257 to 1,317, as of October 17, 2026
Show all 12 subtests
| Subtest | Gemini 3.8 Flash TTS | Eleven v4 | Verdict |
|---|---|---|---|
| Askable Labs VOICE-H pronunciation accuracy Elo (French) | 1,119 | 1,287 | Eleven v4 ahead |
| Askable Labs VOICE-H emotion/tone Elo (French) | 1,139 | 1,309 | Eleven v4 ahead |
| Askable Labs VOICE-H naturalness Elo (French) | 1,119 | 1,284 | Eleven v4 ahead |
| Askable Labs VOICE-H overall preference Elo (French) | 1,095 | 1,235 | Eleven v4 ahead |
| Askable Labs VOICE-H pronunciation accuracy Elo (Spanish) | 1,174 | 1,231 | Eleven v4 slightly ahead |
| Askable Labs VOICE-H naturalness Elo (Spanish) | 1,182 | 1,231 | Eleven v4 slightly ahead |
| Askable Labs VOICE-H emotion/tone Elo (Spanish) | 1,194 | 1,243 | Eleven v4 slightly ahead |
| Askable Labs VOICE-H pronunciation accuracy Elo (English) | 1,092 | 1,117 | level |
| Askable Labs VOICE-H overall preference Elo (Spanish) | 1,160 | 1,182 | level |
| Askable Labs VOICE-H emotion/tone Elo (English) | 1,134 | 1,144 | level |
| Askable Labs VOICE-H naturalness Elo (English) | 1,121 | 1,116 | level |
| Askable Labs VOICE-H overall preference Elo (English) | 1,107 | 1,109 | level |
Source · latest October 17, 2026
VoiceArena
Gemini 3.8 Flash TTS aheadGemini 3.8 Flash TTS is clearly ahead in 3 of 8 subtests, Eleven v4 in none. 5 are level.
VoiceArena TTS Elo: Mexican Spanish
95 % ranges 1,120 to 1,156 and 1,047 to 1,089, as of October 28, 2026
VoiceArena TTS Elo: Arabic MSA
95 % ranges 1,165 to 1,201 and 1,110 to 1,154, as of October 28, 2026
VoiceArena TTS Elo: Vietnamese
95 % ranges 1,108 to 1,136 and 1,068 to 1,098, as of October 28, 2026
Show all 8 subtests
| Subtest | Gemini 3.8 Flash TTS | Eleven v4 | Verdict |
|---|---|---|---|
| VoiceArena TTS Elo: Mexican Spanish | 1,138 | 1,068 | Gemini 3.8 Flash TTS ahead |
| VoiceArena TTS Elo: Arabic MSA | 1,183 | 1,132 | Gemini 3.8 Flash TTS ahead |
| VoiceArena TTS Elo: Vietnamese | 1,122 | 1,083 | Gemini 3.8 Flash TTS ahead |
| VoiceArena TTS Elo: Japanese | 1,188 | 1,154 | level |
| VoiceArena TTS Elo: Brazilian Portuguese | 1,097 | 1,070 | level |
| VoiceArena TTS Elo: Hindi | 1,094 | 1,114 | level |
| VoiceArena TTS Elo: US English | 1,059 | 1,066 | level |
| VoiceArena TTS v1, US English, All, Elo | 1,059 | 1,066 | level |
Source · latest October 28, 2026
Artificial Analysis
Eleven v4 aheadEleven v4 is clearly ahead in 2 of 2 subtests, Gemini 3.8 Flash TTS in none.
Artificial Analysis Controlled Voice Arena Elo
95 % ranges 1,039 to 1,063 and 1,143 to 1,167, as of November 3, 2026
Artificial Analysis Provider Voice Arena preference
95 % ranges 1,269 to 1,295 and 1,319 to 1,349, as of November 3, 2026
Source · latest November 3, 2026
DesignArena
Gemini 3.8 Flash TTS slightly aheadGemini 3.8 Flash TTS is clearly ahead in 0 of 2 subtests and slightly in 2, Eleven v4 in none.
DesignArena TTS Arena Elo
as of October 28, 2026
DesignArena Audio Realism Elo
as of October 28, 2026
Source · latest October 28, 2026
All data side by side
Prices are verbatim from the provider, because audio models bill per minute, character or token.
| Gemini 3.8 Flash TTS | Eleven v4 | |
|---|---|---|
| Task | Speech output | Speech output |
| Developer | ElevenLabs | |
| Status | Active | Active |
| Released | September 22, 2026 | September 28, 2026 |
| Runs locally | no | no |
| Price | $0.50 per 1M text tokens through December 31, 2026, then $1 per 1M text tokens from January 1, 2027 | n/a |
| Popularity (out of 100) | 0 | 1 |