olleh

Overview

Olleh provides an Ollama-compatible API for Apple's Foundation Models, announced at WWDC 2025. It bridges Apple's on-device model and the Ollama ecosystem with a command-line interface and an HTTP server. Tools and libraries that speak Ollama's API can then use Apple's model.

Features

• olleh serve starts an Ollama-compatible HTTP server (port 11941 by default)
• olleh run starts an interactive chat
• olleh check confirms Foundation Models are available
• Supports custom Foundation Models adapters with --adapter
• Works with the Ollama Swift client library

Requirements

• macOS 26 beta or later
• Apple silicon (M1 or later)
• Xcode 26 beta / Swift 6.2 or later

Install

1. Install with Homebrew

   brew install mattt/tap/olleh

2. Check availability and start the server

   olleh check
   olleh serve

Example

Start olleh serve and point an Ollama client at http://localhost:11941 to generate text with Apple's default model.