# Andrea Borio

> Andrea Borio is a software developer working on local LLM inference for Apple Silicon, with a focus on quantization, Metal, mixture-of-experts models, and SSD streaming.

This is Andrea's canonical personal site. Technical claims are reported with their measured setup and caveats. Imported articles retain their original Substack publication date and link back to the source. Clean Markdown versions are provided for every page.

## Start here

- [About Andrea](https://andreabor.io/about/index.md): Background, current open-source work, and contact details.
- [Current work](https://andreabor.io/now/index.md): What Andrea is working on in August 2026.
- [Post archive](https://andreabor.io/posts/index.md): All technical field notes in reverse chronological order.
- [Full site text](https://andreabor.io/llms-full.txt): A single text file containing the main pages and complete article bodies.

## Technical articles

- [Why this blog exists](https://andreabor.io/posts/why-this-blog-exists/index.md): Published 2026-08-21. The useful part of an experiment usually happens after the screenshot.
- [I tried to run GLM-5.2 on a 64GB Mac](https://andreabor.io/posts/i-tried-to-run-glm-52-on-a-64gb-mac/index.md): Published 2026-06-23. Field notes from an experimental ds4 fork, a 244GB GGUF, and the small horror of sparse models that are sparse in compute but not very friendly to filesystems.
- [Re-quantizing a local model, 14× faster](https://andreabor.io/posts/re-quantizing-a-local-model-14-faster/index.md): Published 2026-06-10. Where a 2-bit model spends its bits, and why trying answers used to cost eighty minutes

## Machine-readable indexes

- [Sitemap](https://andreabor.io/sitemap.xml): Canonical page inventory.
- [RSS feed](https://andreabor.io/index.xml): Recent content and publication dates.

## External profiles

- [GitHub](https://github.com/andreaborio): Source code and open-source projects.
- [Hugging Face](https://huggingface.co/andreaborio): Model artifacts and experimental builds.
- [Substack](https://andreaborio.substack.com): Original publication archive.