OpenAIMistral AIAudio matchupSpeech output
GPT-4o Mini TTSvs.Voxtral Mini TTS 3
Which model is better?
GPT-4o Mini TTS and Voxtral Mini TTS 3 perform about the same in independent tests.
Independent testsDesignArena
GPT-4o Mini TTS0 of 1
Voxtral Mini TTS 30 of 1
Popularityout of 100
GPT-4o Mini TTSahead36
Voxtral Mini TTS 30
Weights and access
GPT-4o Mini TTSproprietary
Voxtral Mini TTS 3n/a
Priceverbatim from the provider
GPT-4o Mini TTS$0.60 per 1M text tokens
Voxtral Mini TTS 3USD 13 per 1 million characters; cached rate USD 1.30 per 1 million characters
Pick GPT-4o Mini TTS for
more popular
Pick Voxtral Mini TTS 3 for
No clear edge
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”.
DesignArena
levelDesignArena Audio Realism Elo
GPT-4o Mini TTS1,029
Voxtral Mini TTS 31,019
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.
| GPT-4o Mini TTS | Voxtral Mini TTS 3 | |
|---|---|---|
| Task | Speech output | Speech output |
| Developer | OpenAI | Mistral AI |
| Status | Deprecated | Public preview |
| Released | n/a | October 20, 2026 |
| Weights | proprietary | n/a |
| Runs locally | no | no |
| Price | $0.60 per 1M text tokens | USD 13 per 1 million characters; cached rate USD 1.30 per 1 million characters |
| Popularity (out of 100) | 36 | 0 |