Personal project · a hobby with commercial potential

A German pensioner builds an AI that runs offline on a Raspberry Pi — and holds its own against well-known models in many areas.

No data center, no million-dollar budget — just consumer hardware. The result is a modular, fully local assistant: it knows what it knows, stays silent when unsure rather than guessing, researches missing knowledge itself, learns without retraining — and backs every answer with a source.

🔒 Runs entirely on your machine — no cloud, no token costs, your data stays in-house. I don't promise anything I can't show.

The Idea

I'm retired — and instead of playing golf, I build AI. For about a year now I've been pursuing a simple idea on my own home PC setup: artificial intelligence should be honest, local and in your hands. No hype, no data leaks, no model a corporation can switch off from afar.

Language models guess brilliantly — but when they guess wrong, they sound just as confident as ever. For a poem that's fine; for an assistant that schedules appointments, checks invoices or answers questions about documents, it's a deal-breaker.

That's why my assistant has three properties I valued more than size: it is right when it's sure. It stays silent when it's unsure — “I don't know” is a valid answer, not a failure. And it researches and learns on its own when something is missing — permanently, with a source, without ever being retrained.

Why should you believe a pensioner working on something the big players are still tackling? You really shouldn't — so see for yourself: in an open comparison my AI takes on well-known models (you can replay the duels), and it even runs on a Raspberry Pi — answering a question in about half a second. What came out of it surprised me too.

Everything I build shares one idea: honest, local AI — that shows instead of claims.

Everything here is a private hobby project. If enough interest comes together, I'm ready to turn it into something commercial. Every euro earned here flows entirely back into expanding and further developing BRAIN.
≈ 0.5 sper question on a Raspberry Pi 4
1.5 GBRAM — runs fully offline
€0no cloud, no token costs
80+practical capabilities

The Projects

One honest core system — and several things built on top of it or alongside it. Status marked openly.

★ The Heart

BRAIN

The honest AI assistant.

Fully local, with hundreds of practical capabilities — from documents and email to research, images, audio and video. What's special isn't how much it can do, but how reliably: it doesn't guess, it cites. Modular by design — knowledge and capabilities are added as modules and are available immediately, without any retraining.

runs 100% locally knows what it knows barely hallucinates learns on its own cites every answer exact arithmetic can forget (GDPR)
⬇ Download free Model kit Module shop

All prices are one-time — buy once, use forever. No subscription. (Shop & installer are in German for now.)

🛡️

BRAIN EU Audit

BRAIN for regulated environments: every statement with source and date, every step traceable, personal data provably erasable — matching the transparency requirements of the EU AI Act and the GDPR.

🧩

AI Building Blocks

Assemble your own AI from modules — exactly as you need it. Knowledge and capabilities are added as modules and are available immediately, with no retraining. So you only pay for what you actually use.

core principle
🗺️

EU Audit Tool · Cartograph Suite

Generates the technical EU AI Act documentation (Annex IV/XI) for an AI model — automatically, in a single run, fully locally at the customer's site. The model weights never leave the machine.

🥊

LLM Arena

A fair head-to-head: BRAIN competes in twelve disciplines against large language models — from the 7-billion to the trillion class. Expected results are written down before each match and archived as a protocol. In the current duels BRAIN comes out ahead — with 0 hallucinations. Don't take my word for it: watch the replays.

📚

AMIGO

A searchable knowledge base for retro computing: 124 platforms and programming languages — manuals, source code and tutorials — in a full-text search across millions of passages, each with its source.

runningview →
🖥️

AmigoOS

A self-written Amiga operating system with a modern Workbench: window management like a present-day taskbar — plus a built-in ki.library that brings the AI right onto the classic Amiga.

in development
🗂️

Digital Secretary

Bundles BRAIN's office capabilities: email, appointments, invoices and documents — with a traceable rationale instead of a black box. Behind safety gates: reading automatic, sending only with approval.

in development

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