In simple English
This program turns written text into spoken voice files. It can copy any person's voice from a short audio clip. It can speak in many languages and add natural emotions like laughter or whispers. You can run it on your own server or computer. It is free to download and use under a custom open-source licence.
What it is
Fish Speech is a large language model and voice synthesis system that generates natural-sounding speech from text. It supports both command-line tools and a web interface for local operation.
What it is good for
Solo builders who need custom voiceovers, automated video narration, or multilingual character voices without paying for a commercial speech API.
- Creates expressive voices with laughter, crying, and whispers.
- Clones any voice from a short 10 to 30 second audio sample.
- Supports dozens of languages with low error rates.
- Requires a powerful modern graphics card with large memory to run locally.
- Setup involves complex Python environments and large model weights.
- Custom licence restricts certain commercial uses.
Paid cloud text-to-speech APIs and commercial voice cloning services.
Docker (a way to run a program inside its own sealed box, so it cannot break anything else on your server) and PyTorch (a library for building machine learning programs).
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See the official installation guide at https://speech.fish.audio/install/ for environment setup, model weights download, and Docker deployment.