OpenAudio S1
Jun 2025
OpenAudio S1Compare inon
OpenAudio S1 measured on 3 of 3 Text to speech benchmarks3
BenchmarkByScoreRank
Multimodal1
Other2
No benchmark matches
$15per 1M characters
1,085arena Elo
Jun 2025released
Exact native tariff; see source for billing scope.Price covers
Ranking?
Full ranking →···
48Gemini 2.5 Flash Lite TTS1,08649OpenAudio S11,08550Studio1,077Strong at
Alternatives?
ModelScoreCostPriceWhat changes
SCheaperSimba 3.2wins 72%-56%$6.60OpenFish Audio Drama 3 Previewwins 72%same$15
CheaperVoxtral 3 TTSwins 68%-13%$13ICheaperRealtime TTS-2 Flashwins 68%-31%$10.40SCheaperSoniox TTS Real-Time v2wins 63%-5%$14.20ModelScoreCostPriceWhat changes
SSimba 3.2wins 72%-56%$6.60Voxtral 3 TTSwins 68%-13%$13IRealtime TTS-2 Flashwins 68%-31%$10.40SSoniox TTS Real-Time v2wins 63%-5%$14.20MFalcon 2wins 60%-33%$10ModelScoreCostPriceWhat changes
SSimba 3.2wins 72%-56%$6.60SSimba 3.0wins 55%-56%$6.60MFalcon 2wins 60%-33%$10aAsync Flash v1.5wins 58%-33%$10.10IRealtime TTS-2 Flashwins 68%-31%$10.40
Benchmarks
in Speech & VoiceAA TTS controlled voice1,000#30
AA TTS provider voice1,085#49
TTS Arena (v2)1,504#6
FAQ
How much does OpenAudio S1 cost?›
$15 per 1M characters.
Is OpenAudio S1 free to use?›
There is no free API; it costs $15 per 1M characters.
How good is OpenAudio S1, and what is it best at?›
#49 of 96 in Text to speech.
Is OpenAudio S1 better than Gemini 2.5 Flash Lite TTS?›
On AA TTS provider voice, OpenAudio S1 scores 1,085 vs 1,086 — about the same. It is 63% more expensive.
When was OpenAudio S1 released? Is there a newer version?›
Released 2025-06-03. It is the current version in its line.
What is OpenAudio S1?›
OpenAudio S1 is a speech & voice model from Fish Audio, released Jun 2025.
What are the best alternatives to OpenAudio S1?›
Simba 3.2 (cheaper), Fish Audio Drama 3 Preview (open weights).