OpenAI API: gpt-5.1, gpt-5.3-codex, gpt-5.4-nano - data-export checklist

147 days until shutdown (2027-04-01).

1. [GENERIC] Check the vendor announcement for an export path: announcement
2. [GENERIC] Export EVERYTHING first, cherry-pick later - grab the full account archive, not per-item downloads.
3. [GENERIC] Verify the archive opens and spot-check 3 records - a corrupt export discovered after the deadline is unrecoverable.
4. [GENERIC] Note any API tokens, integrations and webhooks that will break; list what consumes them.
5. [DATA-DERIVED] Pick a destination: gpt-6-sol for gpt-5.1 and gpt-5.3-codex; gpt-6-luna for gpt-5.4-nano (OpenAI's stated replacements) (compare)
6. [GENERIC] Do a second export right before the deadline for the delta since your first one.

What's at risk: see the vendor announcement.

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Steps labeled [OFFICIAL] come from the vendor; [GENERIC] are our standard playbook. Not affiliated with OpenAI. Shutdown Watch tracks vendor announcements and public deadlines; it is monitoring assistance, not legal or migration advice.