# Kroonen AI

> Kroonen AI is the independent AI lab behind the Libre Stack: open tools, focused AI products, and original model research built without lock-in.

Every page below links a clean Markdown version of the corresponding HTML page.
Full corpus in one file: https://www.kroonen.ai/llms-full.txt. Deterministic search: https://www.kroonen.ai/api/search?q=QUERY.

## Docs

- [API Documentation](https://www.kroonen.ai/docs/api/index.html.md): Public API for the Kroonen AI lab: a read-only Genesis 1B training status feed and a Turnstile-gated contact endpoint. OpenAPI specification and agent discovery documents are published alongside.
- [OpenAPI specification](https://www.kroonen.ai/docs/openapi.json): Machine-readable schema for the public API endpoints

## Lab notebook

- [Genesis 1B, Run 2: Nearly 3× Throughput, Same Hardware](https://www.kroonen.ai/blog/genesis-architecture-v2/index.html.md): Redesigning Genesis 1B from 20 to 32 layers. Same param count, same GPUs, 3× training throughput.
- [Fixing FSDP Checkpoint Deadlocks on 2× RTX 4090](https://www.kroonen.ai/blog/genesis-checkpoint-failures/index.html.md): How I fixed FSDP checkpoint deadlocks on consumer GPUs without NVLink using DCP sharded checkpoints.
- [The Genesis Manifesto - Sovereign Intelligence for the Post-Generative Era](https://www.kroonen.ai/blog/genesis-manifesto/index.html.md): Data sovereignty, constitutional alignment, and the case for training language models on consumer hardware. Why the future of AI is local, private, and personality-first.
- [The Optimizer State Bug - Genesis Training Postmortem](https://www.kroonen.ai/blog/genesis-optimizer-state-bug/index.html.md): A silent AdamW optimizer state bug that wasted 1,000 training steps during Genesis 1B pretraining, and how to diagnose it.
- [Genesis 1B: Supervised Fine-Tuning - Eval Baseline and SFT Setup](https://www.kroonen.ai/blog/genesis-sft/index.html.md): Pre-SFT evaluation baseline on Genesis 1B (step 40,000) across MMLU, ARC, HellaSwag, PIQA, Winogrande, and Lambada. SFT data mixture and training configuration for the next phase.
- [Genesis 1B Run 2 Complete - 80,000 Steps](https://www.kroonen.ai/blog/genesis-training-progress/index.html.md): Genesis 1B Run 2 complete: 80,000 steps (~42B tokens) on 2× RTX 4090, final training loss 1.87.
- [Mapping the Mind of Qwen 3.5 9B](https://www.kroonen.ai/blog/sae-qwen3-5-9b/index.html.md): A sparse autoencoder trained on the internal activations of Qwen 3.5 9B for mechanistic interpretability research.

## Site

- [Kroonen AI | Independent AI Lab](https://www.kroonen.ai/index.html.md): Kroonen AI is the independent AI lab behind the Libre Stack: open tools, focused AI products, and original model research built without lock-in.
- [Lab Notebook](https://www.kroonen.ai/blog/index.html.md): Training logs, engineering postmortems, and research notes from Kroonen AI’s independent AI lab.
- [Kroonen AI Brand Identity & Media Kit](https://www.kroonen.ai/brand/index.html.md): Official Kroonen AI logos, color palette, usage guidance, and downloadable brand assets.
- [Products](https://www.kroonen.ai/projects/index.html.md): Explore the Kroonen AI lab: Libre Claw, Libre Bot, Libre Phone, Libre WebUI, and Genesis 1B: independent AI products built without lock-in.
- [Libre WebUI | Private Local Model Interface](https://www.kroonen.ai/projects/librewebui/index.html.md): A quiet, private interface for local language models. No telemetry, no tracking, and no cloud dependency.
- [AI Lab, Model Engineering & Evaluation](https://www.kroonen.ai/services/index.html.md): Focused lab engagements to build private AI products, train and adapt models, and stress-test agent systems, with working code, reproducible evaluations, and clean handoff.

## Optional

- [Acceptable Use Policy](https://www.kroonen.ai/legal/acceptable-use/index.html.md): The conduct, content, and technical-use rules for Kroonen AI's services, including telephony and AI-specific requirements.
- [AI Addendum](https://www.kroonen.ai/legal/ai/index.html.md): AI-specific terms: the nature of AI output, output ownership, our commitment not to train on your data, and prohibited uses.
- [Legal Register & Policies](https://www.kroonen.ai/legal/index.html.md): The current published Terms of Service, Privacy Policy, AI Addendum, and Acceptable Use Policy for Kroonen AI, Inc.
- [Privacy Policy](https://www.kroonen.ai/legal/privacy/index.html.md): How Kroonen AI, Inc. collects, uses, and protects personal information, with GDPR and CCPA/CPRA rights.
- [Terms of Service](https://www.kroonen.ai/legal/terms/index.html.md): The terms governing use of Kroonen AI's open-source software, Libre Bot SaaS, research previews, and professional services.