You have told ChatGPT who you are at least fifty times.
Then you open Claude and do it again.
Your job, your tone, your projects, the thing you hate in drafts, the client you’re working with this week.
ChatGPT memory lives inside ChatGPT.
Claude memory lives inside Claude.
Neither can read the other, so every time you switch tools, you start from scratch.
On November 5, Notion announced that ChatGPT, Claude, Muse, and Bot can now save what they learn to one shared memory in Notion and use the same skills.
That memory sits in a Notion page you can open, read, and fix.
I set it up on both.
This issue walks you through it from zero until ChatGPT and Claude both read the same Notion second brain before they answer you.
At the end of this issue, paid members get my Shared Memory Starter Kit: the memory rules I use, ten copy-paste prompts to seed and manage your memory, and a weekly cleanup checklist so your memory doesn’t fill up with junk.
Why I Cared About This One
I use Claude for writing and building.
I use ChatGPT for quick research and voice chats when I’m walking.
For months, I kept a Notion page called “Context Dump” and pasted it into every new chat.
My niche, my audience, my formatting rules, my banned words.
It worked.
It was also stupid.
I was the memory, and the AI was borrowing it.
When Notion posted that ChatGPT and Claude could write to the same memory, I wanted to know one thing: could I stop pasting that page?
So I tested it.
Old Way → New Way
Old way: Tell ChatGPT your preferences → Tell Claude the same preferences → Paste a “context” doc into every new chat → Correct the same mistakes in both tools → Lose everything when you switch apps
New way: Connect both AIs to Notion once → They save what they learn to one Memories database → Every new chat checks Notion first → Fix a memory once, and both AIs get the fix → Switch tools anytime and your context comes with you
Your Claude memory and ChatGPT memory are mostly black boxes.
A Notion second brain is a page you control, so you can edit or delete anything an AI saves about you.
