Short answerReports of OpenAI's guidance say you can keep editing a GPT until you migrate it, even after new GPT creation stops. After migrating, the original becomes read-only and edits belong in the plugin.
Before you migrate
Summaries of OpenAI's migration documentation say that until a GPT is migrated you can keep editing it, even after the date when new custom GPT creation ends. Use that window to fix instructions and refresh files, because the migration copies the latest published version.
After you migrate
OpenAI states the original remains usable until retirement but becomes read-only, so edits must be made in the plugin.
Make a good copy first
- Publish your final edits before migrating (unpublished edits may not be included).
- Back up the final instructions and files: export guide.
- Migrate or rebuild: steps.
Dates and details: retirement dates. If something is unclear check the FAQ.
Check your GPT before you move it
Paste your instructions, file names and Actions schema into the free checker. It runs in your browser and builds a portable bundle. Nothing is uploaded.
Open the free checkerRelated guides
Sources
- ChatGPT Learn: Moving your custom GPT workflows to plugins
- OpenAI Help Center: Custom GPT retirement and migration FAQ
Pages describing other companies' products reflect their public documentation on the date shown and can go out of date.