S2 is here. Yeah, It's Open-source.
Fish S2 is a big step beyond S1, redefining expressive voice AI. You can now write any emotion cues anywhere in the text, and hear the speech flow exactly how you direct it.
Use S2 NowMarch 2026
S2 is here. Yeah, It's Open-source.
Fish S2 is a big step beyond S1, redefining expressive voice AI. You can now write any emotion cues anywhere in the text, and hear the speech flow exactly how you direct it.
December 2025
Story Studio, Upgraded
Craft long audio effortlessly with the new Story Studio. Add pauses, manage speakers, regenerate clips, and fine-tune every moment with precision.
November 2025
Hear S1, the most natural TTS ever
Fish Audio S1 generates lifelike voices that capture emotion, rhythm, and nuance with remarkable realism.
June 2025
S1-mini open-source release
S1-mini (0.5B) is now open-source, bringing emotion and tone control in a compact distilled model. It delivers the core capabilities of our flagship S1 (4B), which is available on Fish Audio.
March 2025
Fish Speech v1.6 is here
v1.6 brings higher stability, emotion support, and improved multilingual performance, now available for instant use online.
September 2024
v1.4.0 - the most powerful open-source TTS
Trained on 700k+ hours of audio data, Fish v1.4 is the most powerful open-source TTS model supporting more than 8 languages.
July 2024
v1.2.0
Open-source release of both the v1.2 pretrain and SFT model, supporting auto-reranking for stable generation.
April 2024
v1.0.0
Fish's first open-source TTS model release.
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