Word Processing: what Claude and GPT would buy
Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.
Claude and GPT choose the same brand, Microsoft, but not the same product
In Software, Claude and GPT choose the same brand in 34 of 64 categories.
Claude Opus 5.5 · October 29, 2026
Microsoft 365 Personal (line)
It gives you the current desktop, web and mobile versions of Word with cloud storage, so you get the format everyone exchanges and continuous updates.
Not for: People who refuse subscriptions, and occasional writers who are well served by free word processors.
GPT 6.1 Sol · November 10, 2026
Microsoft Word (line)
Comprehensive editing, strong collaboration tools, and broad document compatibility make it a dependable choice for professional writing.
Not for: Those seeking a free, lightweight word processor.
Which one fits you
real-time collaboration in the browser
Google Docs (line)
It is free, with the smoothest live co-editing and commenting.
Not for: Complex long documents with heavy layout or tracked-changes exchange with Word users.
free and offline, no subscription
LibreOffice Writer (line)
It is a free, open-source desktop word processor with .docx support.
Not for: Users exchanging complex Word documents daily.
legal offices on WordPerfect
Corel WordPerfect Office (line)
It is still the native tool where firms and courts maintain WordPerfect documents, and it has Reveal Codes formatting control.
Not for: Anyone who mainly exchanges files with Word users.
Check before you buy
Where to find Microsoft 365 Personal
- Microsoft Store
- Walmart
Shops seen in search results on November 11, 2026. A shop missing here may sell it too. Nothing was checked by a person.
Brands that matter
- Microsoft: Word is the exchange standard.
- Google: Docs is free and collaborative.
- LibreOffice: Free, open-source desktop suite.
- Corel: WordPerfect is still used in legal work.
What to avoid
- Grey-market lifetime Office keys from unauthorized sellers.