I built a fully local AI ecosystem — 3D reconstruction, voice assistant, video calling, messaging — all on your hardware, $0 cloud cost

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Hey r/selfhosted,

I’ve been building what I call CODA OS — not really an operating system, more like a complete AI-native ecosystem that runs entirely on local hardware. No API keys, no subscriptions, no data leaving your machine.

What’s in it:

CODA Forge — 3D human reconstruction from phone rotation videos. 18-stage pipeline, CPU-only geometric reconstruction. Outputs photorealistic 3D models (OBJ/GLB/STL) with face reconstruction and texture baking.

BHAASM Transformer — Custom 2.2B parameter language model with Mixture of Experts, Grouped Query Attention, and Rotary Position Embeddings. Trained on Kaggle T4x2 + P100. I progressively replaced every weight from TinyLlama-1.1B until nothing original remained.

VIJAY Voice Assistant — Desktop voice assistant with wake word detection (“Hey VIJAY”), Whisper-based STT, edge-tts TTS, 30+ capabilities (web search, system control, file operations, media playback, etc.). Runs locally, no cloud needed.

CODA Call — WebRTC video calling with STUN/TURN relay, Flutter + Web clients, cross-network NAT traversal.

CODA Connect — Real-time messaging with WebSocket push, token-based auth, full REST API.

SPECTRA — Gesture control via MediaPipe hand tracking for spatial interaction.

Security: Deception honeypot framework, AES-256-GCM encryption, Argon2 password hashing, tamper-evident audit chains.

Why I built it: I’m 17 and couldn’t afford cloud AI APIs. So I built everything to run on my RTX 5070 + Intel NPU laptop. The 3D reconstruction part actually works better on CPU than GPU because it’s pure geometry.

What’s next: Training the transformer to 1B parameters, writing an IEEE paper on the rotation-scan algorithm, and launching the 3D reconstruction as a B2B API.

GitHub: https://github.com/Sachitt-AV-08

Website: https://codaos.qzz.io

Would love feedback from the self-hosted community. What would you use? What’s missing?