Four GPT-4 rows on OpenAI's API page shut down on January 14, 2027

On October 14, 2026, OpenAI’s deprecations page put a new entry at the top of its list of coming removals: GPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini leave the API on January 14, 2027. The API is the door software uses to call a model, not the chat window on the web or on a phone. Those four lines cover five version IDs, because GPT-4o has two: gpt-4o-2024-08-06, gpt-4o-2024-11-20, gpt-4o-mini-2024-07-18, gpt-4.1-2025-04-14 and gpt-4.1-mini-2025-04-14. The page says that custom-tuned versions built from exactly these base models, usually called fine-tunes, shut down on the same day as the base model.

The page opens with a sentence saying it lists removals on the API, along with the model to switch to. For all four lines, the suggested replacement column says gpt-6-luna. That is OpenAI’s own suggestion in the table, not the result of an independent test.

Read the date on the row, not the general policy paragraph

The same page has a paragraph on advance notice: general-purpose models are normally announced at least six months ahead, unless safety or compliance reasons force a shorter schedule. The October 14, 2026 entry gives January 14, 2027 as the shutdown date, which is three months after the announcement. The page does not say why this entry is shorter than the six-month paragraph. Take the date from the table row for the exact ID you use.

Not seeing the words “ChatGPT app” on this page is not a promise that the app will keep the same models. The page does not list the models inside the chat window.

What to check if you only use the chat window

If you only open chatgpt.com or the phone app, and you keep no config file or invoice containing the IDs above, this notice does not tell you to cancel your plan. Plan names such as Free, Go or Plus, and the model name shown in the chat box, do not appear in those four lines. Write down one sentence: “The API page dated October 14, 2026 does not set a January 14, 2027 deadline for the chat window.”

If a file, an email from a vendor, or a settings screen in software you pay for contains exactly one of gpt-4o-2024-08-06, gpt-4o-2024-11-20, gpt-4o-mini-2024-07-18, gpt-4.1-2025-04-14 or gpt-4.1-mini-2025-04-14, then the deadline on this page is January 14, 2027. If you have an API key, you can look at the shutdown_date field through the model-listing call, which the page calls GET /v1/models: the field is the shutdown date in year-month-day form, or empty if none has been announced. This article did not run that call on a real account.

Not finding the IDs on your own machine does not prove that a third-party app is not calling them. You can only conclude something about the places you opened and could read.

Sources

1. OpenAI, Deprecations page — entry “2026-10-14: GPT-4 series model deprecations”: the four model lines, the version IDs, the January 14, 2027 shutdown date, fine-tunes on the same schedule, and the gpt-6-luna replacement column; the page states this is the list of API removals. Opened October 15, 2026.