Running AI Offline - Complete Guide to Setting Up llama.cpp on Linux, macOS, and Windows

Learn how to run powerful AI language models completely offline on your own computer using llama.cpp. This detailed guide covers everything from installing dependencies and building llama.cpp on Linux, macOS, and Windows to downloading GGUF models from Hugging Face , enabling GPU acceleration, hosting local AI APIs, and optimizing performance. Whether you want a private ChatGPT-style assistant, a coding AI, or a self-hosted inference server, this tutorial walks through every step with commands, examples, tips, and troubleshooting instructions.