GGUF, Q4_K_M and Other Things That Look Like Wi-Fi Passwords: A Field Guide to Running AI Locally Same model, eight files, names like hotel Wi-Fi passwords. Here’s what GGUF, Q4_K_M, K-quants and i-quants actually mean, how much dumber each one makes your model, and the napkin maths to know if it’ll fit before you hit download. 11 October 2026 Tech / Tutorials