Activate GPT for Word with a one-time setup using your OpenAI API key.
From a Word document, click GPT for Excel Word in the Home tab.
The sidebar appears on the right of your Word document.
Paste your OpenAI API key where indicated.
(Optional) Enter your OpenAI organization ID. If you are part of multiple organizations, it ensures that you get billed on the correct account.
Click Save API key.
You have set up your OpenAI API key in GPT for Word.
Try out GPT prompts in Microsoft Word.