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Async Pro v1.0
Async's higher-quality text-to-speech model tier for natural narration, served through the Async Voice API.
- Async
- Closed
- Released 25 May 2026
Where it ranks
- CText to speechModels · Cloud · 1,129 on Artificial Analysis Speech Arena: Text to Speech (provider voices)
Facts
- Vendor
- Async
- Family
- Async Pro
- Released
- 25 May 2026
- Weights
- Closed: API and apps only
- License
- proprietary
- API price
- $20 per 1M characters (Artificial Analysis normalised price for Async Pro v1.0; Async lists Pro from $1.0 per hour of audio.)
- Access
- Free tier available
- Last verified
- 19 Oct 2026
Price from async.com, 19 Oct 2026.
Benchmark results
| Benchmark | Result | Entry on the leaderboard | As of | Source |
|---|---|---|---|---|
| Artificial Analysis Speech Arena: Text to Speech (provider voices) | 1,129 | Async Pro v1.0Provider Voice Arena, all categories and accents; rank 31 of 96, 2440 appearances; raw value from the page's embedded data; no last-updated date shown, so as_of = retrieval date. | 19 Oct 2026 | artificialanalysis.ai |
Where you can use it
No tracked tool lists this model yet.