Every Mac with Apple Silicon has a built-in LLM - Apple's on-device foundation model, shipped as part of Apple Intelligence. Apple provides the FoundationModels framework (macOS 26+) to access it, but only exposes it through Siri and system features. apfel wraps it in a CLI and an HTTP server - so you can actually use it. All inference runs on-device with no network calls for the LLM itself. Optio

