$10.10per 1M characters
1,139arena Elo
May 2026released
Exact native tariff; see source for billing scope.Price covers
Ranking?
Full ranking →···
30Azure HD 2.51,14031Async Flash v1.51,13932Step TTS 2 (Mar 2026)1,135Strong at
Alternatives?
ModelScoreCostPriceWhat changes
SCheaperSimba 3.2wins 65%-35%$6.60
OpenFish Audio Drama 3 Previewwins 65%+49%$15SCheaperSimba 3.0wins 47%-35%$6.60
CheaperGemini 2.5 Flash Lite TTSwins 42%-9%$9.20IBetterRealtime TTS-2 Flashwins 61%same$10.40ModelScoreCostPriceWhat changes
SSimba 3.2wins 65%-35%$6.60SSimba 3.0wins 47%-35%$6.60Gemini 2.5 Flash Lite TTSwins 42%-9%$9.20ModelScoreCostPriceWhat changes
SSimba 3.2wins 65%-35%$6.60IRealtime TTS-2 Flashwins 61%same$10.40
Voxtral 3 TTSwins 61%+29%$13SSoniox TTS Real-Time v2wins 56%+41%$14.20Fish Audio Drama 3 PreviewOpenwins 65%+49%$15ModelScoreCostPriceWhat changes
Fish Audio Drama 3 PreviewOpenwins 65%+49%$15BBreeze TTS 2Openwins 62%+237%$34AMing 3.0 TTSOpenwins 57%——Fish Audio S2 ProOpenwins 46%+49%$15
Step Audio EditX (Mar 2026)Openwins 44%——ModelScoreCostPriceWhat changes
aAsync Pro v1.0same+100%$20.20aAsync Flash v1.0wins 37%same$10.10All async models →History
2 versionsBenchmarks
in Speech & VoiceAA TTS provider voice1,139#31
FAQ
How much does Async Flash v1.5 cost?›
$10.10 per 1M characters.
Is Async Flash v1.5 free to use?›
There is no free API; it costs $10.10 per 1M characters.
How good is Async Flash v1.5, and what is it best at?›
#31 of 96 in Text to speech.
Is Async Flash v1.5 better than Azure HD 2.5?›
On AA TTS provider voice, Async Flash v1.5 scores 1,139 vs 1,140 — about the same. It is 54% cheaper.
When was Async Flash v1.5 released? Is there a newer version?›
Released 2026-05-25. It is the current version in its line.
Is Async Flash v1.5 open source?›
No, Async Flash v1.5 is a closed model available through an API. The closest open-weights option here is Fish Audio Drama 3 Preview.
What is Async Flash v1.5?›
Async Flash v1.5 is a closed speech & voice model from async, released May 2026.
What are the best alternatives to Async Flash v1.5?›
Simba 3.2 (cheaper), Fish Audio Drama 3 Preview (open weights).