What is AI memory?
AI memory is what an AI tool keeps between one chat and the next. The types, how ChatGPT, Claude and Gemini remember you, and when you need a separate memory.
Guide
What kinds of AI memory tools are there, and which fits your work?
AI memory tools come in four kinds: memory built into each AI tool, browser extensions, memory layers for developers, and a shared memory you connect to all your tools.
Which kind fits comes down to two questions: do you work in one AI tool or several, and do you write code or use the tools as they are?
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How does each of the four kinds work?
| Kind | How it works | Where it stops |
|---|---|---|
| Built-in memory | The AI tool keeps what it learns about you from your chats in it, like ChatGPT, Claude and Gemini memory | It works only inside its own tool, and tools differ in how much of it they show you |
| Browser extensions | They run in your browser, picking up context on one chat site and adding it on another | They work where the browser does, so they do not reach desktop and mobile apps or coding tools in the terminal |
| Developer memory layers | Libraries and APIs a developer adds to an app they are building | They need code, and serve the app they are built into |
| Shared memory | An independent memory you connect to each tool from its settings, which every tool reads and writes | Each tool needs connecting once, and it works with tools that accept outside connections |
Built-in memory in ChatGPT, Claude and Gemini is compared in detail, with review dates and official links, in which AI remembers your work best.
How to choose between the four
- If you work in more than one AI tool, built-in memory falls short, because each tool keeps its memory to itself.
- If you use desktop apps or coding tools, a browser extension does not reach them.
- If you do not write code, a developer memory layer needs someone to build it for you.
- Whatever you pick, ask: can I read and edit what is saved about me, and can I export it if I leave?
What Memory Bridge adds
Memory Bridge is the fourth kind: a shared memory you connect from the settings of ChatGPT, Claude and your coding tools, with no browser extension. Every tool you connect reaches all your projects, and you can disconnect any of them whenever you like.
What it keeps are notes you can read and edit, each with its source and date, and you can export them whenever you like. It needs no code, and it works in any language.
See how it works, or how to connect ChatGPT and Claude to your apps.
Common questions
Is ChatGPT memory an AI memory tool?
Yes, the first kind. It keeps what it knows about you inside ChatGPT and does not reach your other tools.
Do I need a browser extension to share memory between ChatGPT and Claude?
No. A shared memory connects from each tool's settings. All the options are in the guide to sharing context between AI tools.
What is the difference between AI memory and a context window?
The context window is what the model reads in the current chat; memory is what remains afterwards. It is explained in the context window guide.
I am a developer. Does Memory Bridge work with my tools?
Yes. Coding tools such as Claude Code and Cursor connect to it too, and the details are on the developers page.
Keep reading
Compare before you choose
Comparisons of Memory Bridge with ChatGPT, Claude and Gemini memory, and with Mem0 and MemoryPlugin. What each option does, and what Memory Bridge adds.
How Memory Bridge works
Connect your tool, tell Memory Bridge about your work, then carry on. How your context is saved and how it comes back in every new chat and every tool.
One memory. Every tool you use.
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