I used ChatGPT for a long time, then I switched to Claude. We are not doing that debate today, that is not the point.

The point is that when I switched, I lost everything it knew about me. My script style, how I speak, the details of my projects, how I build my Notion systems. ChatGPT had all of it and Claude had nothing.

So I went back through my old chats one by one, asking ChatGPT to write things out so I could paste them into Claude. That is hours of your life, gone.

Notion just fixed that, and the fix is better than I expected.

What this actually is

Notion memory gives you one shared memory that every AI you use reads from and writes to.

So ChatGPT learns something about you today, writes it into your Notion, and Claude knows it tomorrow in a brand new chat it has never had before. It goes both ways. Your context stops living inside one app.

Notion wrote about why they built it here.

1. Grab the prompt

Notion gives you a setup prompt on their agent setup page. Copy it.

Start with whichever AI already knows the most about you, because that is the one you want exporting rather than importing.

2. Paste it and connect Notion

Paste the prompt into your AI and it will ask to connect Notion through MCP. That is just the connection that lets the AI read and write your Notion, nothing more complicated than that. Confirm and continue.

If you want the detail on what MCP is doing, Notion documents it here.

3. Pick the full option, not the basic one

You get a choice.

Basic setup just connects Notion and makes a guide your agents check first. The other one is the shared context layer, which is the full thing: your memory, your work, your skills, all living in Notion and carried across every agent and every session.

Take the second one. That is the entire reason you are doing this.

4. Let it import what your AI already knows

This is the part that saved me.

During setup it offers to import what it already knows about you. So everything ChatGPT had learned about me over months went straight into Notion.

Two honest things about it though. It is a one-time import during setup, not a live sync forever. And how much actually comes across depends on what your AI is willing to hand over.

Nothing gets created without you approving it, so read what it proposes before you click through.

5. Paste the custom instructions, and do not skip this

At the end it hands you a block of instructions to paste into your AI's custom instructions.

That block is what tells the AI to go read Notion before it starts working, and to save what matters after. Skip it and you have built a memory that nobody checks.

Watch the whole thing

If you would rather see it than read it, here is the full setup, both AIs, start to finish.

6. Now do it again in your second AI

Same steps. Copy the prompt, paste it into your other AI, connect Notion, paste the custom instructions.

Two minutes.

And that is it. ChatGPT writes, Claude reads, and whatever you tell Claude today, ChatGPT knows tomorrow.

What it builds in your Notion

This is my favourite part.

You get an Agent Operating Guide, a private page holding the standing rules, and it is the first thing every AI reads before it does anything. And you get a Memories database, where your preferences, your decisions and your project details get saved.

Depending on what you approve it can also set up a place for documents and artifacts, and a destination for your skills.

And these are real Notion pages. You can open them, read them, fix anything that is wrong, delete anything you do not like. It is not a black box inside a chat app that you cannot see into.

It is yours.

Three honest things before you go and do it

Check your own plan first. Notion's own documentation does not agree with itself here. The developer docs read like it works on all plans, while the help centre ties memories to Notion AI, which is Business and Enterprise. So go to settings, Notion AI, memory, and see what you actually have rather than trusting either page.

It has your permissions. When you connect an AI through MCP, everything you can see in your workspace, it can see. For me that is fine because it is my own workspace. But know that going in, especially if you are in a shared one.

A messy memory helps nobody. Notion says this themselves, and they are right. Memory does not magically fix your AI. If what goes in is a mess, every AI you own now reads the same mess.

One more thing, and it is not in any article yet

Everyone is still writing that skills are coming soon, because Notion's October page still says that.

It is not true any more. I checked mine and my Notion skills are already loading into Claude.

So you write a skill once and use it in every AI you have.

Same idea I have been building for four years, except for your brain instead of your AI. One place that holds everything so you stop starting over.

That is SB7.