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0xshug0/audio.cpp

Analysis updated 2026-05-18

428C++Audience · developerComplexity · 4/5Setup · hard

TLDR

A C++ runtime for running audio AI models locally without Python, supporting text-to-speech, voice cloning, speech recognition, music generation, and source separation across 20+ model families.

Mindmap

mindmap
  root((audio.cpp))
    Supported tasks
      Text-to-speech
      Voice cloning
      Speech recognition
      Music generation
      Source separation
      Voice activity detection
      Speaker diarization
    Performance
      1.8x-5x faster than Python
      CUDA optimized
      No Python required
    Interfaces
      Command-line tool
      API server mode
      JSON pipeline config
    Built on
      ggml runtime
      C++ and CMake
      CUDA toolkit
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filefunction / class

What do people build with it?

USE CASE 1

Run a text-to-speech model locally to generate spoken audio from text without setting up a Python environment or sending data to a cloud API.

USE CASE 2

Clone a voice from a short audio sample and use it to synthesize new speech using a local voice cloning model with no Python dependency.

USE CASE 3

Transcribe speech from an audio file to text using a local speech recognition model running through the audio.cpp CLI.

USE CASE 4

Separate vocals from instruments in a music file using a source separation model run entirely on local hardware.

What is it built with?

C++ggmlCUDACMake

How does it compare?

0xshug0/audio.cppd7ead/mkpivmlittlefrogyq/ue4ss-subnautica-2
Stars428390483
LanguageC++C++C++
Setup difficultyhardhardeasy
Complexity4/55/52/5
Audiencedeveloperresearchergeneral

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

How do you get it running?

Difficulty · hard Time to first run · 1h+

Requires building from source with CMake and a C++ compiler, CUDA support also needs the CUDA toolkit installed separately.

The README does not state a license directly, check the repository for a license file before use.

In plain English

audio.cpp is a C++ runtime for running audio AI models locally without any Python installation. If you have ever wanted to use text-to-speech, voice cloning, speech recognition, or music generation on your own computer but found that setting up the Python packages for these tools is complicated and fragile, audio.cpp offers an alternative: a single compiled program that handles many different audio model families through a common interface. The framework is built on top of ggml, the same low-level computation library used by tools like llama.cpp for running large language models locally. This means audio.cpp can run audio models efficiently on CUDA graphics cards, with reported speed improvements of 1.8 to 5 times faster than the equivalent Python implementations for some models. For example, a text-to-speech model called VibeVoice can generate about 94 minutes of speech in roughly 18 minutes on a compatible GPU. The list of supported model types is broad. On the text-to-speech side, there are over 20 different model families available, supporting dozens of languages including English, Chinese, Japanese, German, French, and many others. Voice cloning, which copies a voice from a short audio sample, is supported in several of these. On the audio understanding side, there are speech recognition models, voice activity detection (which detects when someone is speaking versus silence), and speaker diarization (which identifies which speaker said which part). Music generation and audio source separation, which splits a mixed audio track into its parts such as vocals and instruments, are also included. The tool runs from the command line and also includes an API server mode for integration with other software. There is experimental support for defining multi-step audio processing workflows in a configuration file, so you can chain operations like transcription followed by voice conversion without writing custom code. Building from source requires a C++ compiler and CMake. CUDA support requires the CUDA toolkit. The project is under active development. The full README is longer than what was shown.

Copy-paste prompts

Prompt 1
I want to run text-to-speech locally using audio.cpp without any Python. Walk me through building the project from source with CUDA support and running a basic TTS inference on a text input.
Prompt 2
I want to clone a voice from a 10-second audio sample and use it to synthesize new sentences using audio.cpp. Which model should I use and what are the CLI flags?
Prompt 3
How do I run the Qwen3 ASR model in audio.cpp to transcribe an English audio file? Show me the build step and the exact CLI command.
Prompt 4
I want to separate vocals from instruments in an MP3 file using HTDemucs in audio.cpp. Show me the command to run source separation and what output files I get.

Frequently asked questions

What is audio.cpp?

A C++ runtime for running audio AI models locally without Python, supporting text-to-speech, voice cloning, speech recognition, music generation, and source separation across 20+ model families.

What language is audio.cpp written in?

Mainly C++. The stack also includes C++, ggml, CUDA.

What license does audio.cpp use?

The README does not state a license directly, check the repository for a license file before use.

How hard is audio.cpp to set up?

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

Who is audio.cpp for?

Mainly developer.

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