Switch Between ChatGPT and Claude: Memory Migration Workflow

1. From ChatGPT to Claude. ✦ Settings → Privacy → Export data (pick 90 days). ✦ Get the zip from your email, unzip it. ✦ Open a new Claude chat, upload the files, paste my prompt. It turns your whole history + memories into ONE Markdown file: Claude-to-ChatGPT .md ✦ Upload that file to your ChatGPT Library, ask it to save it to memory. 2. From Claude to ChatGPT. ✦ Go to claude.ai/settings/capabilities?open_memory_import=true ✦ Copy the export prompt Claude gives you. ✦ Paste it into ChatGPT. It will give you all your memories in one code block. ✦ Paste it back into Claude → Add to memory. ✦ For skills: find your Codex → Skills folder. ✦ Download them as zips, then Claude → Customize → Skills → Add.