Quick answer
OpenAI's API deprecations page lists five dated GPT-4o and GPT-4.1 model IDs for shutdown on January 14, 2027. It names GPT-6 Luna as the recommended replacement for each, and says fine-tuned versions follow the same schedule as their base models. Developers should locate the exact IDs in deployed code and test their own integration before the shutdown; the notice does not announce a change to ChatGPT's consumer app.
The GPT-4 API snapshots scheduled for January 14
OpenAI lists five dated IDs: 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. All are scheduled to shut down on January 14, 2027.
Sources: OpenAI
GPT-6 Luna is the listed replacement, not a compatibility guarantee
The table names gpt-6-luna as OpenAI's recommended replacement for each listed snapshot. That recommendation does not establish identical outputs or behavior in a particular application. Check the current model documentation, then validate representative prompts, parameters, tool calls, and downstream assumptions before switching production traffic.
Sources: OpenAI
Inventory model IDs and include fine-tuned versions
Search application code, deployment settings, scheduled jobs, and model-routing configuration for the exact IDs. OpenAI says fine-tuned versions of these models follow the same shutdown schedule as their underlying base models. Plan a staged migration and regression check before January 14 rather than waiting for API requests to fail. This is practical migration guidance, not a compatibility test of any specific integration.
Sources: OpenAI
This notice is about the API, not the ChatGPT app
The source is OpenAI's API deprecation schedule and identifies dated API model IDs. It does not announce that GPT-4o or GPT-4.1 is being removed from ChatGPT's consumer app, nor does it establish availability of GPT-6 Luna in Chat AI.
Sources: OpenAI
Frequently asked questions
What readers usually ask
Which OpenAI API model IDs are scheduled to shut down on January 14, 2027?
The notice lists 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.
What replacement does OpenAI recommend?
The deprecation table names gpt-6-luna for all listed snapshots. Developers should still test their own integrations because a recommended replacement is not a promise of identical behavior.
Are fine-tuned versions affected too?
Yes. OpenAI says fine-tuned versions follow the same shutdown schedule as their underlying base models.
Does this notice retire GPT-4o or GPT-4.1 from the ChatGPT app?
The notice covers API model snapshots. It does not announce a change to ChatGPT's consumer app.
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