How to use Ollama: run AI models on your own machine

Ollama runs open models on your own computer, for free, with one install command and one run command. For a vibe coder the appeal is blunt: inference that costs nothing, never leaves your laptop, and has no rate limit but your hardware. Here is the whole thing, install to editor, plus the plain catch about your RAM and the reason Claude Code will not point at it without help.