OpenAI's official deprecations page confirms the notification date, affected snapshots, shutdown date and recommended replacement; it does not provide a reliable announcement hour.
OpenAI schedules retirement for GPT-4o and GPT-4.1 API snapshots
2026-10-14Verified announcementADOPT
OpenAI says customers were notified on October 14 that named GPT-4o, GPT-4o mini and GPT-4.1 API snapshots, including fine-tuned variants, will be removed on January 14, 2027. The affected snapshots remain callable now; this is a scheduled shutdown, not an immediate removal. OpenAI recommends gpt-6-luna as the replacement.
What this means for you
Production users have a fixed migration deadline that can affect behavior, latency, price and fine-tuned assets. Inventory exact model IDs now and validate the replacement on representative evaluations rather than relying on alias-level assumptions.
Evidence & related material
Technical details & scores
| Stage | scheduled deprecation; affected snapshots remain callable at review time |
|---|---|
| Notification Date | 2026-10-14 |
| Shutdown Date | 2027-01-14 |
| Affected Families | named GPT-4o, GPT-4o mini and GPT-4.1 snapshots plus fine-tuned variants listed on the deprecations page |
| Recommended Replacement | gpt-6-luna |
| Time Basis | official page gives the date only; observed Last-Modified was 2026-10-14T15:25:49Z, but that header does not prove the announcement hour |
Technical impact 2
Engineering value 5
Adoption signal 5
Maturity 5
Verification cost 3
Risk 2