MacGPT 3.21 — macOS

Opening ChatGPT every time you have a quick question can interrupt your flow. That's the problem MacGPT solves — it puts a ChatGPT window right in your menu bar, ready with one click.

You need an OpenAI account or API key to use MacGPT

You'll need either an OpenAI account or an API key to use it.

Can I use the latest model? Version 3.21 adds support for gpt-4o, so you're not stuck on an older model.

Is it fast to open? The Global feature gives you a centered text field for ChatGPT input. You can also assign a keyboard shortcut in settings, so you don't even need to click the menu bar.

A few setup notes

MacGPT can connect to ChatGPT through the website or directly through the API using your own OpenAI API key. If you choose the API route and something isn't set up right, the app now shows clearer error messages to point you in the right direction.

Version 3.21 brings gpt-4o support to your everyday chats

Version 3.21 added support for gpt-4o. That's the single change, and it matters more than the short note suggests. If you've been using an older model through MacGPT, switching to gpt-4o means the app now works with the current model OpenAI offers. No extra steps, no configuration hunting — the app handles it once you update.

For regular use, this mostly affects how the Inline feature and Global text field respond. The same quick access you're used to, but the underlying model is the one OpenAI is putting out now. If you interact with ChatGPT through the web interface inside MacGPT, the model selection follows whatever you have active in your OpenAI account.

Assign a keyboard shortcut to open the Global text field

MacGPT works fine out of the box, but a couple of adjustments make it fit your routine better.

• Assign a keyboard shortcut. The settings panel lets you pick a key combination to open the Global text field. This is the difference between clicking the menu bar icon and pressing two keys. Worth setting up early.
• Choose your connection method. You can either sign in with your OpenAI account credentials or use a custom API key. If you already have an API key for other tools, using it here keeps everything under one billing arrangement. If not, the web sign-in route works fine — just know the app loads the ChatGPT web interface in your default browser.
• Set the error message preference. If you go the API key route and something goes wrong, clearer error messages help you spot the issue faster. That's a small thing until you need it.

MacGPT suits writers and editors who ask short, frequent questions

MacGPT fits best for people who ask ChatGPT short, frequent questions during the workday. The menu bar access saves you from keeping a browser tab open or switching windows. A few scenarios where it makes sense:

• Writers and editors who need quick phrasing help or synonym checks. The Inline feature works inside text fields, so you can ask without leaving the document you're working on.
• Developers who paste error messages into ChatGPT for explanations. Having the Global text field a keyboard shortcut away keeps you in your code editor.
• Anyone who uses ChatGPT several times an hour and wants to cut down on context switching. The menu bar approach is minimal — one click, type, done.

If you only use ChatGPT once a day or prefer the full web interface with chat history visible, MacGPT might feel limiting. It's built for speed, not for browsing long conversations.

MacGPT runs on macOS 12 Monterey and newer, Intel and Apple Silicon

MacGPT runs on macOS 12 Monterey and newer. Both Intel and Apple Silicon Macs are supported, so no architecture worries.

The app lives in the menu bar, so it has a small visual footprint. It's a native macOS application, not a wrapped web app, so it responds to standard Mac behaviors — menu bar interactions, system keyboard shortcuts, the usual Quit command. The download comes as an archive that you unpack and move to your Applications folder. No installer wizard, no background services.

You'll need either an active OpenAI account or an API key ready before first use. Without one of those, the app won't have anything to connect to. The error messages will tell you that plainly if you try.

• Added support for gpt-4o.

• macOS 12 Monterey or later
• Intel or Apple Silicon
• OpenAI account credentials or an OpenAI API key