GLM-5.2 is a frontier AI model with 744 billion parameters. It normally requires H100 GPUs, hundreds of gigabytes of VRAM, and a cloud bill larger than a car payment. Colibri runs it on a laptop with 25 GB of RAM.

The secret? It never loads the whole model.

What Is Colibri?

Colibri is a pure C inference engine for GLM-5.2, a Mixture-of-Experts (MoE) model released by Z.ai. It streams model experts from disk instead of keeping them in memory, trading disk I/O for RAM.

"This is not fast. It is a 744B frontier-class model answering correctly on a machine that costs less than one H100 fan."