OpenAIMiniMaxAudio matchupSpeech output
GPT-4o Mini TTSvs.MiniMax Speech 2.8
Which model is better?
GPT-4o Mini TTS and MiniMax Speech 2.8 each lead in different tests.
Pick GPT-4o Mini TTS for
Pick MiniMax Speech 2.8 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
depends on the subtestGPT-4o Mini TTS is clearly ahead in 2 of 5 subtests, MiniMax Speech 2.8 in 2. 1 is level.
VoiceArena TTS Elo: Hindi
95 % ranges 824 to 844 and 931 to 951, as of October 28, 2026
VoiceArena TTS Elo: Brazilian Portuguese
95 % ranges 931 to 949 and 841 to 861, as of October 28, 2026
VoiceArena TTS Elo: Mexican Spanish
95 % ranges 853 to 897 and 769 to 817, as of October 28, 2026
Show all 5 subtests
| Subtest | GPT-4o Mini TTS | MiniMax Speech 2.8 | Verdict |
|---|---|---|---|
| VoiceArena TTS Elo: Hindi | 834 | 941 | MiniMax Speech 2.8 ahead |
| VoiceArena TTS Elo: Brazilian Portuguese | 940 | 851 | GPT-4o Mini TTS ahead |
| VoiceArena TTS Elo: Mexican Spanish | 875 | 793 | GPT-4o Mini TTS ahead |
| VoiceArena TTS Elo: Vietnamese | 831 | 909 | MiniMax Speech 2.8 ahead |
| VoiceArena TTS Elo: Arabic MSA | 897 | 906 | level |
Source · latest October 28, 2026
Speko
levelSpeko TTS naturalness 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.
| GPT-4o Mini TTS | MiniMax Speech 2.8 | |
|---|---|---|
| Task | Speech output | Speech output |
| Developer | OpenAI | MiniMax |
| Status | Deprecated | Active |
| Released | n/a | January 23, 2026 |
| Weights | proprietary | proprietary |
| Runs locally | no | no |
| Price | $0.60 per 1M text tokens | speech-2.8-hd costs $100 per 1M characters, synchronous and asynchronous |
| Popularity (out of 100) | 36 | 0 |