Hume AI Voice Design Benchmark
Gemini 3.8 Flash TTS 71.4 Listeners rate generated voices for English voice design, multilingual control, accents and voice qualities.
Hume AI runs the evaluation. No public leaderboard was found, so numbers come from model makers' reports.
- Made by
- Hume AI
- Released
- September 2026
- Kind
- Speech recognition and translation
- Level
- Everyday
- Scored
- Ranked by votes
- Answers
- Open-ended
- Tasks
- Kept private
- Last in a launch post
- September 2026
- Last model added
- September 2026
Only Gemini 3.8 Flash TTS has a rating here, from its lab’s own post
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs. A rating ranks a model only against others rated in the same arena at the same time, so these don’t show who leads.
Source: Labs’ model cards
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Gemini 3.8 Flash TTS | 71.4 | Sep 2026 | Lab model card |
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Source: Labs’ model cards
One lab put it in a launch post in the last six months
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| Sep 23, 2026 | Gemini 3.8 Flash TTS | 71.4 | Hume AI Voice Design Benchmark, Overall English |
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| Sep 23, 2026 | Gemini 3.8 Flash TTS model card | 71.4 | Hume AI Voice Design Benchmark, Overall English, Gemini speech generation model page | Capabilities |
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