Ghostwriter

Overview

Ghostwriter is an OpenAI ChatGPT add-in for Microsoft Office with over 2 million installs. The revolutionary writing assistant lets you brainstorm, plan and create content faster than ever, available in the Office Add-in Store for Word, Outlook and more.

Editions include Ghostwriter Word Basic (perfect for students), Word PRO (used by over half a million users), Word Ultimate (with interactive interface and reasoning models) and Ghostwriter Outlook. Features include quick action prompts, agents/personas, writing styles and tones, creative settings, response length, language translation and inline editing.

Privacy-first with one-time purchase pricing ($50-$150 USD), you can add your own API key to unlock all models from OpenAI, Google Gemini and xAI Grok. Works on Office 2021/M365/O365 for Windows, Mac, Web and iPad.

Core capabilities

ChatGPT for Office

Brainstorm, plan and create content faster

2M+ installs

Trusted by millions of users worldwide

Quick Action prompts

One-click writing actions

Agents/personas

50-100 specialized AI personas

Writing styles and tones

Customize output for any context

Language translation

Translate between languages

Inline editing

Edit text directly in your documents

Multiple editions

Word Basic, PRO, Ultimate and Outlook

Privacy first

Add your own API key for OpenAI, Gemini and Grok

Use cases

Document writing

Email creation

Content brainstorming

Translation

Productivity