macOS 27 changed how Apple's built-in AI features can be managed. The operating system no longer offers a single switch for turning off Apple Intelligence, and the underlying models stay on disk even after the features are switched off in Settings. RemoveMacAI, an open-source command-line tool from the developer omlahore, restores that control: it turns the features off, deletes the downloaded models, and prevents macOS from fetching them again. The tool's own documentation describes the process as one command and fully reversible. Apple Intelligence is Apple's suite of on-device AI features Writing Tools, Genmoji, Image Playground, and others powered by foundation models that ship with the Mac. In macOS 27 those models remain on disk after the features are disabled, and the tool's documentation states there is no longer a single switch to turn the whole system off. RemoveMacAI fills that gap. The tool is distributed as a single install command that downloads the latest release, verifies its SHA-256 checksum, and runs it from a temporary directory. Nothing is installed to the system: curl -fsSL https://raw.githubusercontent.com/omlahore/RemoveMacAI/main/install.sh | bash Every release is built from its tag by GitHub Actions and carries a build provenance attestation, which can be checked with GitHub's attestation tool. A Homebrew tap is also available. The tool makes no network requests and collects no data, and its source is auditable under the MIT license. What it changes The tool turns off Siri (including
The article describes RemoveMacAI as a single install command that turns off Apple Intelligence features and deletes the downloaded models, which is visualized in this terminal demonstration.
After running RemoveMacAI, the status command verifies that Apple Intelligence features are off and models have been removed, supporting the article's note on the tool's reversibility.