Apfel

What it does

Apfel is a free, open-source command-line tool that gives you direct access to the on-device language model built into macOS Tahoe (macOS 26) on Apple Silicon Macs. Instead of requiring model downloads, API keys, or configuration, Apfel wraps Apple's FoundationModels framework and exposes it as a UNIX CLI, an OpenAI-compatible HTTP server, and an interactive chat. It runs entirely on your device—no network calls, no data leaves your Mac.

Who it is for

Apfel is for developers, power users, and anyone who wants to use Apple's on-device AI from the terminal without friction. It's especially useful for:

• Developers who want to integrate local AI into shell scripts, pipelines, or existing OpenAI-compatible tools.
• Privacy-conscious users who want AI that works offline with no data sent to the cloud.
• Mac users who already have macOS Tahoe and Apple Intelligence enabled and want to leverage the built-in model without extra setup.

Why it matters

Apple ships a ~3B parameter LLM with every Apple Silicon Mac running macOS Tahoe, but it's only accessible through Siri and system features. Apfel unlocks this model for general-purpose use—no downloads, no subscriptions, no token costs. It's private by design: all inference runs on the Neural Engine, and Apfel adds zero tracking or telemetry. For users who need local AI for scripting, automation, or quick queries, Apfel eliminates the overhead of other local AI tools that require model downloads and configuration.

Launch signal

Apfel was launched as a Show HN on Hacker News and has gained significant traction, with over 6,100 GitHub stars and 234 forks. The project is actively maintained (v1.8.3) and includes 1,414 tests. It has been starred by engineers from Apple, Google, VMware, and NVIDIA, indicating strong interest from the developer community.

Brand and naming

The name "Apfel" is German for "apple," a playful nod to Apple's ecosystem and the tool's purpose of unlocking Apple's on-device AI. The name is short, memorable, and easy to type in a terminal. The branding emphasizes simplicity and zero configuration, with a clean, minimal website that mirrors the tool's philosophy. The tagline "The free AI already on your Mac" clearly communicates the value proposition.