Export your memory from Claude
Unlike ChatGPT, Claude has a built-in settings page that shows your entire memory profile in one place — no prompting required.
Step 1 — Open your memory settings
In Claude, go to Settings → Capabilities. You'll see your complete memory profile — response instructions, personal information, projects and goals, and technical preferences — already organized into sections.
Step 2 — Copy your memory profile
Copy the entire profile shown there and save it somewhere (a text file, a note, or straight into the next step). Claude's own view is already clean and human-readable, so there's no reformatting step needed here.
Import memory into ChatGPT
ChatGPT has no dedicated import tool, but its memory feature explicitly saves anything you ask it to remember — so a direct request does the job.
Step 1 — Make sure Memory is turned on
In ChatGPT, go to Settings → Personalization → Memory, and confirm it's enabled.
Step 2 — Paste your profile and ask ChatGPT to remember it
In a new chat, paste this prompt with your memory profile in place of the bracketed instruction.
I'm sharing a structured profile of facts, preferences, and context about me that I'd like you to remember going forward. Please save each distinct item below as its own individual memory — don't collapse them into one summary note, save them separately so each can be recalled on its own. After you've done that, list back exactly what you saved so I can confirm nothing was missed or altered. [paste your memory profile here]
Step 3 — Confirm what was actually saved
Check Settings → Personalization → Memory → Manage memories afterward — that's the real source of truth for what got saved, not just what ChatGPT says back in the chat.
Source: OpenAI Help Center — Memory FAQ ↗
This documents how ChatGPT's memory feature works in general — it isn't a guide specific to migrating from another AI service, since no such guide currently exists.