Voxa.Speech.WhisperCpp 0.7.2-alpha

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher.
This is a prerelease version of Voxa.Speech.WhisperCpp. 
dotnet add package Voxa.Speech.WhisperCpp --version 0.7.2-alpha
                    


                    

                
NuGet\Install-Package Voxa.Speech.WhisperCpp -Version 0.7.2-alpha
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Voxa.Speech.WhisperCpp" Version="0.7.2-alpha" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Voxa.Speech.WhisperCpp" Version="0.7.2-alpha" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Voxa.Speech.WhisperCpp" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Voxa.Speech.WhisperCpp --version 0.7.2-alpha
                    


                    

                
#r "nuget: Voxa.Speech.WhisperCpp, 0.7.2-alpha"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Voxa.Speech.WhisperCpp@0.7.2-alpha
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Voxa.Speech.WhisperCpp&version=0.7.2-alpha&prerelease
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Voxa.Speech.WhisperCpp&version=0.7.2-alpha&prerelease
                    


                            Install as a Cake Tool

Voxa.Speech.WhisperCpp

Local/offline speech-to-text for the Voxa pipeline using whisper.cpp via the MIT-licensed Whisper.net bindings.

No API key. No network after the first-run model download. Develop without cloud accounts, run zero-cost CI conversations, deploy air-gapped.

Usage

With the Voxa meta-package the descriptor is pre-registered — configuration is all you need:

{
  "Voxa": {
    "Stt": "WhisperCpp",
    "WhisperCpp": { "Model": "base.en" }
  }
}

À la carte:

services.AddVoxa(configuration, voxa => voxa.AddProvider(WhisperCppDescriptors.Stt));

How it behaves

Whisper is an utterance transcriber, not a streaming recognizer. The Voxa VAD gates audio, and the engine transcribes once per utterance when speech ends — so transcripts are final-only (no interim hypotheses), arriving roughly RTF × utterance length after the user stops talking. For interactive development use tiny.en or base.en with the LowLatency profile.

Model weights load once per process and are shared across connections.

Configuration (Voxa:WhisperCpp)

Key Default Notes
Model base.en tiny, tiny.en, base, base.en, small, small.en + -q5_1 quantized variants
ModelPath – Explicit GGML path; bypasses catalog + cache
Language en auto/empty = language detection (slower)
Threads min(4, cores) whisper.cpp inference threads
Translate false Translate-to-English mode

InputSampleRate overrides are rejected at startup — whisper models are 16 kHz mono only.

Models are downloaded on first run (SHA-256-verified, cached under %LOCALAPPDATA%\voxa\models / ~/.cache/voxa/models, override with VOXA_MODEL_CACHE or Voxa:Models:CachePath). Air-gapped hosts set Voxa:Models:Offline = true and pre-provision the cache — a miss is a startup error whose message contains the exact provisioning instructions.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Voxa.Speech.WhisperCpp:

Package Downloads
Voxa

Batteries-included Voxa package. One package reference: AddVoxa(cfg) + MapVoxaVoice("/voice").UseDefaults() gives a working voice bot with STT, TTS, VAD, and an OpenAI chat agent — no knowledge of frames required.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.7.2-alpha 105 7/10/2026
0.7.1-alpha 67 7/10/2026
0.7.0-alpha 73 7/10/2026
0.6.0-alpha 85 6/22/2026
0.5.0-alpha 85 6/13/2026