MacGPT is a small, focused macOS utility built by Good Snooze that turns ChatGPT into a system-level tool rather than a browser tab. It ships three distinct ways to reach the model. Global mode pops a floating text field in the middle of the screen the moment you hit a shortcut, so you can ask a question and get an answer without leaving the document you are working in. Menu bar mode parks ChatGPT in the macOS status bar, reachable either through the ChatGPT website or natively through your own OpenAI API key. Inline mode is the most unusual: you type a trigger phrase and a prompt inside any text field and the model's response is written directly into that field.
Because it can authenticate in two different ways, MacGPT works whether you prefer a ChatGPT Plus subscription or pay-as-you-go API usage. Log in with your ChatGPT credentials and Plus capabilities are available in the app; connect an OpenAI API key instead and you get a faster native path that does not depend on the web interface. Either way, the app is light — it lives in the menu bar and stays out of the way until invoked.
Practical extras round it out. You can copy an entire conversation as a clean readable transcript in one click, and conversation mode lets you speak to ChatGPT instead of typing, with back-and-forth voice replies. The developer, Good Snooze, also publishes GeePeeTee, a free iPhone companion for voice conversations, and is upfront about known limitations: inline mode does not work in every app, and the app needs macOS Monterey or Ventura because it relies on recent system APIs.
