OpenAIGoogleAudio matchupSpeech output

GPT-4o Mini TTSvs.Gemini 3.8 Flash-Lite TTS

Which model is better?

Gemini 3.8 Flash-Lite TTS does better in independent tests, while GPT-4o Mini TTS is more popular.

Independent tests

GPT-4o Mini TTS0 of 1

Gemini 3.8 Flash-Lite TTSahead1 of 1

VoiceArena

Popularity

GPT-4o Mini TTSahead36

Gemini 3.8 Flash-Lite TTS0

out of 100

Weights and access

GPT-4o Mini TTSproprietary

Gemini 3.8 Flash-Lite TTSn/a

Price

GPT-4o Mini TTS$0.60 per 1M text tokens

Gemini 3.8 Flash-Lite TTS$0.50 per 1M text tokens through December 31, 2026, then $1 per 1M text tokens from January 1, 2027

verbatim from the provider

Pick GPT-4o Mini TTS for

more popular

Pick Gemini 3.8 Flash-Lite TTS for

VoiceArena

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 ahead

Gemini 3.8 Flash-Lite TTS is clearly ahead in 7 of 7 subtests, GPT-4o Mini TTS in none.

VoiceArena TTS Elo: Vietnamese

GPT-4o Mini TTS831

Gemini 3.8 Flash-Lite TTS1,141

95 % ranges 819 to 843 and 1,124 to 1,158, as of October 28, 2026

VoiceArena TTS Elo: Mexican Spanish

GPT-4o Mini TTS875

Gemini 3.8 Flash-Lite TTS1,135

95 % ranges 853 to 897 and 1,115 to 1,155, as of October 28, 2026

VoiceArena TTS Elo: Arabic MSA

GPT-4o Mini TTS897

Gemini 3.8 Flash-Lite TTS1,163

95 % ranges 887 to 907 and 1,145 to 1,181, as of October 28, 2026

Show all 7 subtests

Subtest	GPT-4o Mini TTS	Gemini 3.8 Flash-Lite TTS	Verdict
VoiceArena TTS Elo: Vietnamese	831	1,141	Gemini 3.8 Flash-Lite TTS ahead
VoiceArena TTS Elo: Mexican Spanish	875	1,135	Gemini 3.8 Flash-Lite TTS ahead
VoiceArena TTS Elo: Arabic MSA	897	1,163	Gemini 3.8 Flash-Lite TTS ahead
VoiceArena TTS Elo: Hindi	834	1,065	Gemini 3.8 Flash-Lite TTS ahead
VoiceArena TTS Elo: Brazilian Portuguese	940	1,127	Gemini 3.8 Flash-Lite TTS ahead
VoiceArena TTS Elo: Japanese	959	1,136	Gemini 3.8 Flash-Lite TTS ahead
VoiceArena TTS Elo: US English	926	1,082	Gemini 3.8 Flash-Lite TTS ahead

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.

	GPT-4o Mini TTS	Gemini 3.8 Flash-Lite TTS
Task	Speech output	Speech output
Developer	OpenAI	Google
Status	Deprecated	Active
Released	n/a	September 22, 2026
Weights	proprietary	n/a
Runs locally	no	no
Price	$0.60 per 1M text tokens	$0.50 per 1M text tokens through December 31, 2026, then $1 per 1M text tokens from January 1, 2027
Popularity (out of 100)	36	0

More comparisons with GPT-4o Mini TTS and Gemini 3.8 Flash-Lite TTS

GPT-4o Mini TTSvs.Sonic 3.6 GPT-4o Mini TTSvs.Eleven v3 GPT-4o Mini TTSvs.Fish Audio S2 Pro GPT-4o Mini TTSvs.Gemini 3.1 Flash TTS GPT-4o Mini TTSvs.Voxtral Mini TTS GPT-4o Mini TTSvs.Eleven v4 GPT-4o Mini TTSvs.Eleven v4 Turbo Sonic 3.6vs.Gemini 3.8 Flash-Lite TTS Eleven Flash v2.5vs.Gemini 3.8 Flash-Lite TTS

All audio models compared