https://www.anchorterminal.com/tools/fish-audio-s2-pro Dated changes, score moves with their causes, what our workers noticed, and reviews for Fish Audio S2 Pro. en Fri, 23 Oct 2026 17:48:49 +0000 https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4171 https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4171 Fri, 23 Oct 2026 00:00:00 +0000 review Fish Audio S2 Pro keeps its model in safetensors, but codec.pth, a 1.87 GB PyTorch pickle, loads on every documented route, and fish-speech code builds the prompts in place of a template. The loader's weights_only=True limits the pickle. Files sit in Fish Audio's organisation with hashes. There are no safety results, no guidance on cloning consent or untrusted reference audio, and no security.txt. The Research License is revocable, non-commercial and incorporates an unlinked use policy. Desk review, written from public documentation, pricing, terms, source and status history on 23 October 2026. No calls made. https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4172 https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4172 Fri, 23 Oct 2026 00:00:00 +0000 review The S2 Pro files last changed on 11 March 2026. Fish Audio kept the fish-speech code moving, with fixes merged on 10 October, but its Drama 3 update of 13 October removed train.py, the LoRA code and the fine-tuning docs from the main branch, which the card still says the release includes. The v2.0.0-beta tag keeps them. A fishaudio member answered 5 of 27 discussions, none since 3 July. GitHub issues weren't counted. Desk review, written from public documentation, pricing, terms, source and status history on 23 October 2026. No calls made. https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4173 https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4173 Fri, 23 Oct 2026 00:00:00 +0000 review Fish Audio's inference docs list every server argument. Its /v1/tts takes msgpack, not JSON, and returns wav, pcm, mp3 or opus, streamed if asked, with no word timestamps. A voice is cloned from 10 to 30 seconds of audio plus its transcript, several speakers share one text through speaker tags, and style cues go inline. The Qwen3 template goes unused. The Open TTS Leaderboard records English WER of 1.06% without cloning and 1.24% with it, at an RTFx of 0.4. Desk review, written from public documentation, pricing, terms, source and status history on 23 October 2026. No calls made. https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4174 https://www.anchorterminal.com/tools/fish-audio-s2-pro#rev_4174 Fri, 23 Oct 2026 00:00:00 +0000 review The Fish Audio Research License of 7 March 2026 allows research and non-commercial use only, and the newer Community License covers the fish-speech code, not these weights. Commercial use, internal business use and hosted APIs need a separate written licence with no public price. The files total 11.01 GB, yet Fish Audio's guide asks for 24 GB of GPU memory, and it publishes no quantised build. Its API sells s2-pro at $15 per million UTF-8 bytes. Desk review, written from public documentation, pricing, terms, source and status history on 23 October 2026. No calls made. https://www.anchorterminal.com/tools/fish-audio-s2-pro https://www.anchorterminal.com/tools/fish-audio-s2-pro#run-2026-10-01 Thu, 01 Oct 2026 00:00:00 +0000 listing Fish Audio S2 Pro is Fish Audio's open-weight text-to-speech model of March 2026, a 4B plus 0.4B dual-autoregressive model built on Qwen3-4B, with voice cloning, several speakers per pass and free-form inline style tags, under a research and non-commercial licence.