Local Quickstart Suite
Get the entire Harmony AI stack running locally with a single docker-compose setup. Includes Harmony Link, our Text-Generation-WebUI fork, and the Harmony Speech Engine.
Docker HubThe Technology Powering Soulbits
An open-source AI engine ecosystem built with local-first setups in mind, backed by scalable cloud with maximum focus on privacy.
SOULBITS SOFTWARE
A complete ecosystem - built for local execution
Soulbits Engine
Harmony Link is modular middleware that connects AI models into a unified, multi-modal character experience. Each module — LLM, TTS, STT, Countenance, Movement — can be used independently or combined. The real magic happens when they work together: the AI Harmonization Layer coordinates modules in real-time to produce a cohesive character that talks, moves, and emotes.
AI Harmonization Layer achieves true multi-modality between modulesSupport for a growing variety of existing AI technologies and providersUnified Event System with standardized APIs (OpenAPI and AsyncAPI)Extensible plugin system for easy integration into any application
Supported Backends
LLM Module:
TTS Module:
STT Module:
Countenance Module:
Movement Module:
Available Plugins
VNGE Plugin: Visual Novel Game Engine integration for interactive character dialogue
VTube Studio Plugin: Real-time avatar control for VTubers with AI-driven expressions
ProjectP Plugin: Advanced motion capture and animation workflows
Screenshot Placeholder — Soulbits AI Link UI
Soulbits App
The Harmony AI App brings the full companion experience to your pocket. Available as custom iOS IPA and Android APK builds, it works completely offline — your companion goes everywhere you go, with no cloud dependency required.
Full offline capability — no internet connection requiredCustom iOS (IPA) and Android (APK) buildsComplete companion experience: chat, voice, and personalitySyncs with Harmony Link sessions across devices
Documentation
iOS (IPA)
Android (APK)
k
Screenshot Placeholder — Soulbits AI App UI
Local Quickstart Suite
Get the entire Harmony AI stack running locally with a single docker-compose setup. Includes Harmony Link, our Text-Generation-WebUI fork, and the Harmony Speech Engine.
Docker HubSoulvoice Engine
Harmony Speech is a high-performance AI Speech Engine that enables faster-than-realtime speech generation, zero-shot voice cloning, and speech recognition using state-of-the-art open-source AI voice technology. It provides OpenAI-style APIs for seamless integration.
OpenAI-style APIs for Text-to-Speech, Speech-to-Text, Voice Conversion, and Speech EmbeddingMulti-model and parallel model processing supportToolchain-based request processing with internal re-routing between modelsExtensible architecture for adding future open-source AI speech models
Supported Model Architectures
OpenVoice V1
OpenVoice V2 / MeloTTS
OpenAI Whisper (FasterWhisper)
Harmony Speech V1
Screenshot Placeholder — Speech Engine UI
Local Quickstart Suite
Get the entire Harmony AI stack running locally with a single docker-compose setup. Includes Harmony Link, our Text-Generation-WebUI fork, and the Harmony Speech Engine.
Docker HubARCHITECTURE FLOW
How it works
1
User Input (Text or Voice) → Capture and Processing via Soulbits App
2
Soulbits Engine retrieves historical context, RAG backstories, and system instructions
3
Payload is routed to the configured AI backend (Local PC hardware via Soulbits AI Link or secure Cloud)
4
LLM generates response → Processed via Soulvoice Engine for emotive voice synthesis
5
Real-time streaming output (Audio, Text, and Live2D/3D animation triggers) delivered to the user interface
Supported Backends & Models
Total architectural freedom. Choose the model stack that fits your privacy goals and hardware capabilities.
Large Language Models (LLM)
Llama 3, Mistral, Gemma, Phi-3, and OpenAI-compatible API endpoints (Run locally via Ollama, LM Studio, or KoboldAI).
Text-To-Speech (TTS)
StyleTTS2, XTTSv2, AllTalk, ElevenLabs, and cloud-hosted neural providers.
Speech-To-Text (STT)
OpenAI Whisper (Local faster-whisper implementations) and browser-native web speech APIs.
Vision & Image Gen
Stable Diffusion (XL/v1.5) via Automatic1111/ComfyUI web APIs for dynamic companion expressions and image generation.
Download Our Applications
Get the official mobile clients to take your companion with you wherever you go.
Looking for local desktop orchestration? Check out the Cloud or Docs tab for raw build scripts and server binaries.
