Over the past few days, I came across a project that made me stop everything to understand how it worked. It wasn't just another framework for running language models, nor another GPU-based optimization. It was something different.

The project is called Colibri.

At first glance, it almost seems impossible. The idea is simple, yet remarkably bold: run a massive Mixture of Experts (MoE) model on an ordinary computer using nothing more than a CPU and an SSD, loading into memory only the experts that are actually needed at each step.

When I first read that, my reaction was probably the same as everyone else's:

"How could that possibly work?"