Independent builder · Founder of Kroonen AI
I’m Robin. I build open tools, run small systems, and train language models. This is my work, and what I learn along the way.
New Glimmer Scope: I looked inside Muse Glimmer 30B01 / Selected work
Released · November 2026
Sparse autoencoders on nine layers of Meta’s open-weight Muse Glimmer 30B. Every feature that fires is labeled, tested for steering, and followed from layer to layer, with a live demo that steers the full model.
Active
A self-hosted creative AI workspace for Ollama and cloud models, with plugins, RAG, artifacts, SSO, and a desktop app.
Early release
A terminal-native coding-agent harness with durable runs, persistent memory, provider routing, browser tools, and a Telegram bridge.
Early access
A lightweight phone desk on Cloudflare Workers and Twilio, covering calls, messaging, voicemail, IVR, and browser calling.
Available
An embeddable AI assistant for documentation sites, designed to add useful product-aware chat in a few minutes.
Pretraining complete · SFT pending
A 1B-parameter multilingual language model pretrained from scratch on two RTX 4090s, with a custom tokenizer and data pipeline.
02 / Field notes
A small publishing setup built around Markdown, static HTML, and conversations that happen elsewhere.
03 / Research notebook
The full training logs, architecture decisions, and research postmortems live at Kroonen AI.
How I build
Start with a real constraint and ship the smallest system that solves it.
Keep important data portable and the self-hosted tools telemetry-free.
Include costs, constraints, failures, and enough detail to reproduce the result.