Ghostwriter AI
Ghostwriter AI is an add-in for Microsoft Office, but it requires your own API key to access more models.
At a glance
Starts at
from $50 per add-in edition
Price as published by the vendor, September 2026.
Free tier
No
Platforms
Windows, macOS, Web, iPad
Best for
Professional writers and content creators
Not for
Content creators with complex writing needs
4.0 out of 5
Scored by a Toolio reviewer after real useOur verdict
Good for those looking for assistance with writing in multiple applications, but not all features are included without additional cost. It's privacy-focused but limited if you don't want to spend extra on APIs.
✓What it does well
Quick generationRapidly produces text based on prompts provided by the user.
Multi-app supportWorks across various Microsoft Office applications including Word, Excel, and Outlook.
Secure ExperienceCommitted to user privacy and security.
✕Where it falls short
No built-in API keys includedRequires purchasing your own API key to access more advanced models.
Limited response customizationCreative settings are basic and might not meet complex writing needs.
Costly add-on featuresAdvanced versions cost extra, making it expensive for certain users.
Key features
Privacy-focusedCommitted to user privacy and security.
Cross-platform compatibilityAvailable on Windows, Mac, Web, iPad.
Language TranslationAvailable on Windows, Mac, Web, iPad.
Multi-App SupportWorks across various Microsoft Office applications including Word, Excel, and Outlook.