Data and AI releases

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TTS language field

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TTS language field Text-to-speech requests accept an optional language field, a BCP-47 tag of the text such as en , es-MX , or zh-TW . It selects the rules used to spell out numbers, dates, units, and symbols before synthesis, and the language used for word timestamps. It does not change the voice, accent, or audio quality.

Governance

Read on docs.fish.audio

Also shipped Oct 16, 2026Fish Audio in October 2026 →

2026.10.08

Make a voice you already have speak another language or accent, with the same speaker. Call POST /voice-generator/localize on a flagship or custom voice, pick an accent, and get candidates back in seconds to audition and convert like Voice Design candidates. GET /voice-generator/available-accents lists the accents you can target.

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Cloud Agent Canvases and Environment Improvements

Canvases from cloud agents Cloud agents can now build interactive canvases as part of their work. Share a finished canvas with your team by sending its link. Learn more about sharing canvases . Environments API The Environments API is now available in beta. Use it to programmatically create and manage the cloud environments your agents run in.

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More from Fish AudioEvery Fish Audio release →

Drama 3

Drama 3 Text-to-speech model you direct in plain language. Describe tone, pacing, and character without a fixed set of audio tags. Use model ID drama-3 in the API. Drama 3 guide | Text to Speech API

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Fish Audio S1 retirement

Fish Audio S1 retirement S1 is deprecated and will be retired on December 31, 2026. After that date, requests that specify s1 are served by s2.1-pro and billed as s2.1-pro , at the same price. To migrate, switch the model ID to s2.1-pro and convert (parenthesis) emotion tags to [bracket] tags. Migrate from S1 | Model deprecations

Deprecation
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More normalization languages

More normalization languages Text normalization now has rules for Turkish ( tr ) and Tagalog ( tl , fil ), and Portuguese follows Brazilian conventions, so pt-BR is supported too. Without language , Turkish and Tagalog text is detected, and Chinese written mostly in Traditional characters uses the Traditional Chinese rules. Supported normalization languages

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Transcribe 1 Pro

Transcribe 1 Pro Speech-to-text model for short clips and long recordings, including multi-speaker conversations. Transcripts can include inline speaker markers, speaker turns, and emotion and vocal-event cues. Use model ID transcribe-1-pro on POST /v1/asr Speech to Text | Models overview

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Fish Audio S2.1 Pro

Fish Audio S2.1 Pro Production text-to-speech model that improves on S2-Pro in quality, latency, and throughput. Supports 83 languages on one model, with the same [bracket] natural-language control and multi-speaker dialogue as S2. Use model ID s2.1-pro for production workloads that need TTFA and DPA guarantees.

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Fish Audio S2

Fish Audio S2 Next-generation text-to-speech model with inline emotion cues, multi-speaker dialogue support, and 80+ languages. S2 introduces [bracket] syntax for natural language control over emotion and paralinguistic cues (e.g., [whisper] , [laugh] , [emphasis] ).

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Fish Audio S1

Fish Audio S1 Historic rebrand from Fish Speech to Fish Audio. #1 ranking on TTS-Arena2 with industry-leading performance. S1 (4B params): 0.008 WER, 0.004 CER - Available on Fish Audio Playground S1-mini (0.5B params): 0.011 WER, 0.005 CER - Open source on Hugging Face 64+ emotional expressions with RLHF integration and multilingual support for English...

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