The First Open-Source
Self-Hosted AI Companion
Engage with Hasaji, your customized local companion. Haven is the first open-source, fully self-hosted AI companion system, bringing together interactive desktop overlays, local image generation, and offline Piper speech on your own hardware.
The Haven Architecture Suite
A synchronized network of local applications designed to host, render, and orchestrate secure AI companion systems.
Interactive Companion
The companion UI floats natively on your desktop. Currently in active development and testing, featuring automated screen capturing, monitor-aware bounds mapping, and smooth status-pulsing borders.
Haven Server Core
A hardened C# .NET 10 orchestrator. Handles OAuth identity mapping, JWT-secured WebSocket connections, rate-limiting, and prompt-injection defense mechanisms while logging actions in a central database.
SD Portrait Engine
Generates custom avatars dynamically. Integrates FaceDetectorYN and GFPGAN face restoration pipelines in ONNX to automatically clean, align, and reconstruct lifelike eyes and facial details.
Gemma 4 Turbo
Runs the #1 community-compiled Google Gemma 4 model on the Ollama registry. Built from native 16-bit float source weights using IQ4_XS non-linear importance matrix quantization.
Offers custom mixtures of merges with Mahou roleplay weights, preserving full vision projector layers for multimodal understanding while delivering high-speed execution directly on commodity CPUs.