Fish Audio AI Releases: Fish Audio STT & Fish Audio S2

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ThursdAI — the weekly AI news podcast hosted by Alex Volkov — has covered 2 Fish Audio releases since Mar 2026, most recently Fish Audio STT on Apr 2, 2026. Highlights include Fish Audio S2, Fish Audio STT. 1 of them shipped with open weights. Every entry below has primary-source links and the episode segment where we covered it live, plus key numbers where we have them.

2 releases1 open weight3 episodesMar 2026 – Apr 2026

April 2026 1

March 2026 1

Fish Audio
New ModelsOpen weights

Fish Audio S2

Fish Audio S2 open TTS hits sub-150ms latency

Fish Audio S2 is a fully open-source TTS model with inline emotion control via free-text bracket tags like gasp, laughter, and long pause. Alex demoed it live with an OpenClaw skill that let his 5-year-old talk to a voice clone of 'Rocky' from Project Hail Mary; Wolfram called it 'ElevenLabs V3 for free.'

<150ms Fish Audio S2 TTS latency