How to Run AI Models Locally on Your PC or Mac (2026 Guide)

Running AI models on your own hardware used to require a PhD and a server rack. In 2026, you can run a capable large language model on a MacBook Air. The tools have matured, the models have gotten smaller and smarter, and there has never been a better time to break free from API dependency. This week, canirun.ai — a tool that checks whether your hardware can run specific AI models — hit the #1 spot on Hacker News with over 1,300 upvotes. The message is clear: developers and power users want local AI. They want privacy, zero API costs, offline access, and freedom from rate limits. This guide walks you through everything you need to get started: what hardware you need, which tools to use, which models to run, and how to set it all up on Mac, Windows, or Linux. Why Run AI Locally? Before we get into the how, let's talk about the why. Local AI is not just a novelty — it solves real problems that cloud APIs cannot. Privacy and data control. When you run a model locally, your data never leav