OpenAI API removes GPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini on January 14, 2027
OpenAI told developers on October 14, 2026 that GPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini are deprecated and will be removed from the API on January 14, 2027. OpenAI recommends gpt-6-luna as the replacement for all four. Fine-tuned versions of these models will be shut down on the same date.
SessionWatcher editorial · Published · Updated · Source announcement: 2026-10-14
Related guide: How to check your Codex usage
Which GPT-4 models leave the API, and when
OpenAI says it notified developers on October 14, 2026 that certain GPT-4 series models are deprecated. They will be removed from the API on January 14, 2027.
The shutdown covers these snapshots: GPT-4o (gpt-4o-2024-08-06 and gpt-4o-2024-11-20), GPT-4o mini (gpt-4o-mini-2024-07-18), GPT-4.1 (gpt-4.1-2025-04-14) and GPT-4.1 mini (gpt-4.1-mini-2025-04-14).
Fine-tuned versions of these models follow the same shutdown schedule as their base models. A fine-tune built on any of the four is therefore also due for removal on January 14, 2027.
Sources: Openai release notes: 2026-10-14
Recommended replacement
OpenAI lists gpt-6-luna as the recommended replacement for every model in the table. Any request that names one of these model IDs will need to use a different model before January 14, 2027.
Sources: Openai release notes: 2026-10-14
What the notice does not cover
The deprecation entry only covers the OpenAI API. It does not mention ChatGPT or Codex plans. It also does not give gpt-6-luna's price or say whether costs will change after switching.
Sources: Openai release notes: 2026-10-14
AI assisted reporting, checked against the linked official sources. Source pages checked 2026-10-17. Editorial process and corrections.