Note Taking: 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 product: Microsoft OneNote
In Software, Claude and GPT choose the same brand in 34 of 64 categories.
Claude Opus 5.5 · October 29, 2026
Microsoft OneNote (line)
It is a free, cross-platform freeform notebook with typed, inked and clipped notes, solid sync and deep Office integration.
Not for: People who want plain-text or Markdown files they fully own locally, and people who rely on Apple-only workflows.
GPT 6.1 Sol · November 10, 2026
Microsoft OneNote (line)
Flexible notebooks, handwriting support, and cross-device syncing make it a versatile choice for organizing work notes and meeting records.
Not for: Those needing local-only storage or plain-text Markdown files.
Which one fits you
local Markdown files and linked notes
Obsidian (line)
It stores notes as plain Markdown files on your own disk, with backlinks and a large plugin ecosystem.
Not for: Users who want handwriting or zero setup.
handwritten notes on iPad
Goodnotes (line)
It is a polished handwriting app with PDF annotation and searchable handwriting.
Not for: Typists and Windows-only users.
Check before you buy
Where to find Microsoft OneNote
- Microsoft Store
Also seen on Amazon.
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: OneNote is free and integrated with Office.
- Obsidian: Local-first Markdown notes.
- Goodnotes: Handwriting leader on iPad.
- Evernote: Pioneer of the category; its free tier has become heavily restricted.
What to avoid
- Apps without a bulk export path.