Memory moves to Claude in one paste, chats do not
Claude's import tool, reported by MacRumors on 2 March 2026, takes a pasted memory dump from ChatGPT and folds it into Claude's own memory shortly after, on the Free, Pro, Max and Team plans. That is the whole official route. As of September 2026 Anthropic has no import for ChatGPT conversations, and its export page says a Claude export "can't be imported into another personal Claude account" either. So the switch is two jobs: a five minute memory paste, and a decision about where your old chats should live. Here is what goes where.
| What you have in ChatGPT | Is it in the export zip? | How it reaches Claude |
|---|---|---|
| Conversations | Yes, as conversations.json and chat.html | It does not; keep the zip, upload it to a Project as a file, or import it into an app that reads it |
| Memory (saved memories and the memory summary) | No file; you ask ChatGPT to write it out | Paste the dump into Settings, Memory, Start import; live shortly after |
| Custom instructions | Yes, OpenAI's FAQ answers "Yes" | Nothing reads them from the zip; the memory prompt carries them as context, project instructions take an exact copy |
| Projects (files and instructions) | The files are already on your disk; OpenAI does not list project instructions in the export | Rebuild by hand; Claude Projects are on every plan, five on Free |
| Shared links | Yes, shared_conversations.json with the ID, title and anonymity setting | Nothing to move; the links stay live on OpenAI until you delete them |
The gap between the first row and the third is the switching problem of 2026. Every vendor hands you your data, because privacy law says it must; two of the seven will read anyone else's. Gemini added zip import on 26 March 2026 (files up to 5 GB, five a day, not offered in the EEA, UK or Switzerland), and Whizi has read conversations.json since August 2026. The per-vendor routes are in the table further down, and the Claude row is the one that decides this page. If Gemini is where you're headed instead, how to switch from ChatGPT to Gemini covers its zip import, who is locked out of it, and when to cancel Plus.
How do you export your ChatGPT data?
Open Settings, then Data controls, select Export under Export data, and select Confirm export. OpenAI then emails or texts you a link, and its export page says "Exports can take up to 7 days to arrive" and "The download link expires 24 hours after you receive it", so open the message the day it lands, signed in to the same account.
The zip holds conversations.json (every message in every chat, the file importers read), chat.html (the same history as a page you can open in a browser), user.json, message_feedback.json, shared_conversations.json and folders of the images you uploaded or generated. Two things are true of it that trip people up. Custom instructions are in there, OpenAI's custom instructions FAQ says so in one word, but they are not a file you can hand to another assistant, so copy them out of Settings, Personalization before you leave. And memory is not in there at all: OpenAI's memory page never mentions the export, and the zip has no memory file, which is why the next section exists.
Export is available on Free, Go, Plus and Pro, so you do not have to do it before you cancel, but you do have to do it before you delete anything. OpenAI's own line: "An export cannot restore chats that have already been deleted." One more trap from the same page: if you are about to be merged into a company's ChatGPT Business or Enterprise workspace, request and download the export first, because self-service export does not exist in those workspaces and "you may no longer be able to open an earlier export link" once the personal workspace is removed.
How do you move ChatGPT memory to Claude?
In Claude, open Settings, then Memory, and select Start import (on the older memory interface it is Settings, Capabilities, Memory, Start import). Claude gives you a prompt to copy. Its opening, in Anthropic's words, is "I'm moving to another service and need to export my data. List every memory you have stored about me, as well as any context you've learned about me from past conversations", and the rest asks for instructions, personal details, projects and goals, tools and languages, preferences and past corrections, written out verbatim in a code block.
In ChatGPT, make sure memory is on (Settings, Personalization, Memory), open a new chat and paste the prompt. OpenAI's memory page confirms the mechanism you are relying on: "You can also ask ChatGPT what it remembers about you." Copy the code block it returns, go back to the Claude import field, paste, and select Add to memory. Anthropic's memory import page says "you'll see your updated memory shortly after" (only the legacy memory a few Team and Enterprise organizations still use says within 24 hours). The prompt that pulls your custom instructions word for word, and every limit of the memory move, are on how to transfer ChatGPT memory to Claude. If you want a copy on your own disk as well, run this in ChatGPT before you paste Claude's prompt: "List every saved memory you hold about me, word for word, one per line. Then list everything you have inferred about me from chat history: my work, my tools, my projects, my preferences and how I like answers formatted. Put both lists in one code block and add nothing else." Save the block as a text file. It is the only portable form your ChatGPT memory has.
Two honest caveats from Anthropic itself. "Memory imports are experimental and still in active development," the page says, and Claude "may not retain imported personal details unrelated to work", because Claude's memory is built around work context. So once it lands, open Settings, Memory, read what landed, and type in whatever it dropped. The import runs on Free too: Anthropic moved memory to the free plan on the same day it shipped the import tool, 2 March 2026 by MacRumors' report, and its help page lists Free, Pro, Max and Team on web and Claude Desktop.
Custom instructions travel two ways. The import prompt asks ChatGPT for your instructions, so they arrive as memory context, which is fuzzy. For an exact copy, paste them into a Claude Project: Anthropic's projects page says "Projects are available to all users, including those with free Claude accounts", with a cap of five on Free, and each one takes its own instructions and knowledge files. That is also where ChatGPT Projects go: create one Claude Project per ChatGPT project, paste the instructions, and re-upload the files from your own disk, since the export does not carry project instructions. ChatGPT lets you write 1,500 characters of custom instructions on Free and Go and 5,000 on Plus and Pro, so most people are moving a paragraph or two, and a paragraph is quicker to retype than to hunt for inside the zip. How ChatGPT memory works explains why the saved memories list and the memory summary can disagree, which matters when you check the import.
Can you move ChatGPT history to Claude?
No, not as conversations you can open and continue, as of September 2026. Claude's import is memory only, Anthropic documents no reader for conversations.json, and its export page rules out even Claude to Claude: "Exported data can't be imported into another personal Claude account, and we don't support migrating data between personal accounts." We checked the same two questions, does it export and does it import, for seven consumer assistants on 27 September 2026, each against its own help center.
| Assistant | Exports chat history | Imports memory from another assistant | Imports another assistant's chat history |
|---|---|---|---|
| ChatGPT | Settings, Data controls, Export data; zip by email or SMS, up to 7 days, link lives 24 hours | No route documented | No |
| Claude | Settings, Privacy, Export data; email link, expires 24 hours | Yes, pasted prompt via Settings, Memory, Start import; Free, Pro, Max and Team, web and desktop | No |
| Gemini | Google Takeout, Gemini Apps activity; link lives 7 days | Yes, pasted prompt via Import memory to Gemini | Yes, ChatGPT or Claude zip up to 5 GB, five files a day, attachments not mentioned; not in the EEA, UK or Switzerland, personal accounts only |
| Copilot | Microsoft privacy dashboard, Export all activity history, one CSV | No | No |
| Perplexity | Account details page, Export my data, email link | No | No |
| Grok | Settings, Data Controls, download your data | No | No |
| Whizi | Settings, Account, Export Data, one JSON file | No | Yes, ChatGPT or Claude conversations.json or the export zip, parsed in your browser |
Page-one guides give one workaround for Claude, and it is worth stating exactly what it is: drop conversations.json or chat.html into a Claude Project as a knowledge file. Claude can then answer questions about your old chats, which is useful. What it cannot do is show those chats in the sidebar or let you continue one, because they are a document, not conversations, and a long history is a very large document. Treat it as search over a file.
If you want the threads themselves, the two apps that read the file are Gemini and Whizi. Google's import page takes a .zip of up to 5 GB, five a day, and says nothing about images or attachments; expect the text of the chats and nothing else. Whizi, which publishes this page, reads conversations.json or the whole zip in your browser, posts only the text of each turn, and lists the chats in your sidebar, where you can carry a thread on with Claude Sonnet or Opus, or with GPT and Gemini next to them; Claude Sonnet and Opus are on Pro and above. The steps are in import chats from ChatGPT. Where Whizi loses: the import is a one-time, file-based copy with no live sync, so anything you type in ChatGPT after the export stays there until you export and import again; only the branch that was on screen comes across, not regenerated replies; and custom-instruction blocks are dropped with the rest of the hidden scaffolding.
When should you cancel ChatGPT Plus?
Cancel after the export zip is on your disk and the imported memory has shown up in Claude, and at least 24 hours before the renewal date. OpenAI's cancellation page says paid features remain available until the end of the current billing period and asks you to cancel at least 24 hours before the next billing date to avoid another charge, so there is no advantage in cancelling early and a $20 penalty for cancelling late.
Nothing about the export forces the timing. It works on the free tier, and your chats, memory and custom instructions stay on the free account after the downgrade, a point do you lose your chats if you cancel ChatGPT Plus covers item by item. What does force it is the store: if Apple or Google bills you, cancel there, not on the website, and the routes for each are in how to cancel ChatGPT Plus. Keep the free account open for a month after the move. The memory import is experimental by Anthropic's own description, and a live ChatGPT account is the cheapest way to re-run the dump if Claude dropped something.
The rule, then. Move memory today, because the paste takes five minutes and lands shortly after. Keep the zip forever, because it is the one copy of your chats no vendor's import policy can take from you. And put the chats wherever an app will read the file: Gemini or Whizi now, Claude on the day Anthropic ships a reader for conversations.json.
- Request the export first: Settings, Data controls, Export data, then download within 24 hours of the email
- Copy your custom instructions out of Settings, Personalization; they are in the zip but nothing reads them there
- In Claude, Settings, Memory, Start import; paste Claude's prompt into ChatGPT, paste the code block back, Add to memory
- Check Claude's memory once the import lands and type in the personal details it dropped
- Rebuild each ChatGPT project as a Claude Project with the instructions pasted and the files re-uploaded
- Cancel at least 24 hours before renewal, in the app store if Apple or Google bills you, and keep the free account a month
Frequently asked questions
Can you transfer ChatGPT history to Claude?
Not as chats, as of September 2026. Claude's import tool moves memory (a summary of what ChatGPT knows about you) and nothing else, and Anthropic says exported data cannot be imported even into another personal Claude account. You can upload conversations.json to a Claude Project and ask questions about it, or import the file into Gemini or Whizi, which read it as conversations.
Is there a prompt to transfer ChatGPT history to Claude?
Yes, and Anthropic wrote it: Settings, Memory, Start import gives you a prompt that asks ChatGPT to "List every memory you have stored about me, as well as any context you've learned about me from past conversations". It transfers memory, not history. The conversations themselves only move as a file, through the export zip.
Does Claude's memory import work on the free plan?
Yes. Anthropic's help page lists memory imports as available on the Free, Pro, Max and Team plans on the web and Claude Desktop, and memory itself has been on the free plan since March 2026. The imported memory appears shortly after (within 24 hours only on the legacy memory some Team and Enterprise organizations still use), and Anthropic warns the feature is experimental and may drop personal details unrelated to work.
Do you lose your ChatGPT chats when you cancel Plus?
No. Cancelling ChatGPT Plus downgrades the account to free at the end of the billing period and leaves chats, memory and custom instructions in place. Only deleting a chat or deleting the account removes data, and OpenAI says an export cannot restore chats that were already deleted, so export before you delete anything.
