Fish Speech
Expressive voice cloning and TTS — 33k stars under a research license.
About
Fish Speech is Fish Audio's text-to-speech and voice-cloning system (S2 Pro): expressive, multilingual synthesis with command-line, WebUI, server, and Docker inference — plus SGLang-Omni and vLLM-Omni serving recipes. 33k stars, paper-backed (arXiv 2603.08823). Licensing: the Fish Audio Research License — custom, NOT open source (the README warns 'we will take action against any violation'). Treat as source-available research code; commercial use needs a license from Fish Audio. Voice-cloning misuse risk is real — the project disclaims illegal use.
What it can do
- **Expressive TTS**: S2 Pro with emotional range and multilingual voices
- **Voice cloning**: clone voices from short reference audio
- **Multiple interfaces**: CLI, WebUI, HTTP server, Docker
- **Serving recipes**: SGLang-Omni and vLLM-Omni integrations
- **Paper-backed**: technical report on arXiv
Setup
```bash
# see speech.fish.audio/install/ for the full guide
docker run -p 8000:8000 fishaudio/fish-speech
```
Command-line, WebUI, and server inference documented at speech.fish.audio. GPU recommended.
Prerequisites
NVIDIA GPU recommended. Review the Fish Audio Research License before any commercial use.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: 33,013 GitHub stars (log-scaled vs catalog peers); last push 1d ago; 1 releases/12mo; 14 open issues. Manual review: expressive TTS/voice-cloning (S2 Pro), 33k stars, paper-backed, Docker/SGLang/vLLM serving; voice-cloning misuse risk. License: Fish Audio Research License — custom, NON-OSI ('we will take action against any violation'); describe as 'source-available', never 'open source'.
★ 33,013 GitHub stars
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 8.4/10
- Maintenance · recency, releases, issue load
- 8.2/10
- Openness · license + docs
- 5.8/10
- Manual review · sanity read + red-flag check
- 8.0/10
- · 33,013 GitHub stars (log-scaled vs catalog peers)
- · last push 1d ago; 1 releases/12mo; 14 open issues
- · manual review: expressive TTS/voice-cloning (S2 Pro), 33k stars, paper-backed, Docker/SGLang/vLLM serving; voice-cloning misuse risk
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.