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what is openmoss fr?

pwilkin/openmoss — explained in plain English

Analysis updated 2026-05-18

21C++Audience · developerComplexity · 4/5Setup · hard

tl;dr

A C++ command-line tool and local server that turns text into spoken audio, including cloning a voice from a short sample.

vibe map

mindmap
  root((OpenMOSS))
    What it does
      Text to speech
      Voice cloning
      Local audio server
    Tech stack
      C++
      GGML
      llama.cpp style engine
    Use cases
      Local narration
      Voice cloned audio
      Offline TTS server
    Audience
      Developers
      Privacy focused users

Code map

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filefunction / class

what do people make with this?

VIBE 1

Generate spoken audio from text on your own machine without a cloud API.

VIBE 2

Clone a specific person's voice from a short reference audio clip.

VIBE 3

Run a local HTTP server that keeps the model loaded for repeated TTS requests.

VIBE 4

Build a privacy-preserving voice assistant or narration tool.

what's the stack?

C++GGMLCMakeQwen3-8B

how it stacks up fr

pwilkin/openmossjdduke/fpcpplagerpun/esp32-cyd-aquarium
Stars212121
LanguageC++C++C++
Last pushed2012-06-01
MaintenanceDormant
Setup difficultyhardeasymoderate
Complexity4/52/52/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

how do i run it?

Difficulty · hard time til it works · 1h+

Requires building from source with llama.cpp, CMake, a C++17 compiler, and a capable GPU.

in plain english

OpenMOSS is a C++ implementation of a text-to-speech (TTS) system that converts written text into spoken audio, including a voice cloning feature that can match a specific person's voice from a short audio sample. It is a port of MOSS-TTS-Delay, an open-source speech synthesis model from the OpenMOSS Team, compiled into a self-contained binary using GGML, the same low-level machine learning library that powers llama.cpp. The system has two components. The first is a language model backbone (Qwen3-8B, an 8-billion-parameter text AI) that generates sequences of audio codes from your input text. The second is an audio codec, a 1.6-billion-parameter neural network, that converts those codes into actual waveform audio at 24 kHz (CD-quality mono). Voice cloning works by encoding a reference audio clip into the same code format and prepending it to the generation, so the model continues in the same voice. It runs as either a one-shot command-line tool (you provide text, it writes a WAV file and exits) or as an HTTP server that keeps the model loaded in memory and accepts repeated requests via API. The server also includes a small browser-based interface for generating and playing back audio. On a 16 GB GPU (an RTX 5060 Ti), the quantized model produces about 10 seconds of speech in 4 seconds of wall-clock time. You would use this to run high-quality AI speech synthesis locally without sending audio or text to a cloud service. Building from source requires llama.cpp, CMake, and a C++17 compiler. The full README is longer than what was provided.

prompts (copy fr)

prompt 1
Help me build OpenMOSS from source using llama.cpp, CMake, and a C++17 compiler on my machine.
prompt 2
Write a script that calls the OpenMOSS HTTP server API to generate a WAV file from a block of text.
prompt 3
Show me how to set up voice cloning in OpenMOSS using a short reference audio clip.
prompt 4
Explain how OpenMOSS's two-stage pipeline (language model plus audio codec) turns text into a waveform.

Frequently asked questions

what is openmoss fr?

A C++ command-line tool and local server that turns text into spoken audio, including cloning a voice from a short sample.

What language is openmoss written in?

Mainly C++. The stack also includes C++, GGML, CMake.

How hard is openmoss to set up?

Setup difficulty is rated hard, with roughly 1h+ to a first successful run.

Who is openmoss for?

Mainly developer.

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