GPT-4o and 4.1 will be deprecated on January 14, 2027 from the OpenAI API

2026-10-14: GPT-4 series model deprecations

On October 14, 2026, we notified developers using certain GPT-4 series models of their deprecation and removal from the API on January 14, 2027.

https://developers.openai.com/api/docs/deprecations#2026-10-14-gpt-4-series-model-deprecations

OpenAI is breaking their own policy by giving only 3 months' notice period instead of 6 months.

Model deprecation notice periods

We provide advance notice before retiring models so customers have time to plan and migrate. When we announce a model deprecation, we notify customers who are actively using the model by email and document the deprecation on this page.

Unless safety or compliance concerns require a faster timeline, we provide the following minimum notice periods before model retirement:

• Generally available models: At least 6 months.
• Specialized variants of generally available models: At least 3 months. Examples include chat variants such as gpt-5.1-chat-latest, Codex variants such as gpt-5.3-codex, and deep research variants such as o3-deep-research.
• Preview models: Preview models, identified by preview in the model name, may be retired with much shorter notice, such as 2 weeks. Examples include computer-use-preview and gpt-4o-audio-preview. We don’t recommend using preview models for business-critical production workloads unless you can migrate on short notice.

If safety or compliance concerns require us to retire a model sooner, we will provide as much notice as reasonably possible.

These notice periods give customers time to evaluate recommended replacement models, test application behavior, and complete migrations before a model is no longer available. In some cases, developers may be able to provision dedicated capacity for continued access after a model’s shutdown date. 

https://developers.openai.com/api/docs/deprecations#model-deprecation-notice-periods