OpenAI to retire GPT-4o, others on Feb 13, 2026

OpenAI said it will retire several older ChatGPT models, including GPT-4o, GPT-4.1, GPT-4.1 mini and o4-mini, effective Feb. 13, 2026.

The company disclosed the decision in a blog post on Jan. 29. However, it said the change applies only to ChatGPT and will not affect its application programming interface.

According to OpenAI, the move reflects significant improvements in newer models, particularly GPT-5.1 and GPT-5.2. As a result, most users have already migrated away from older systems.

“We’re announcing the upcoming retirement of GPT-4o today because these improvements are now in place,” the company said. It added that usage has shifted sharply, with only 0.1% of daily users still selecting GPT-4o.

OpenAI said retiring older models allows it to focus resources on systems that users rely on most. Meanwhile, it said the GPT-5 series offers stronger creative ideation, enhanced personality, and expanded customization options.

Users can now select base styles, such as Friendly, and adjust warmth and enthusiasm. According to OpenAI, these features aim to give users greater control over how ChatGPT responds.

“Our goal is to give people more control and customization over how ChatGPT feels to use—not just what it can do,” the company said.

In addition, OpenAI said it continues to refine ChatGPT by reducing unnecessary refusals, limiting overly cautious responses, and improving creativity. Separately, it said age prediction features now operate in most markets to support safer experiences for users under 18.

The company also pointed to growth in its developer ecosystem. Over one recent week, it approved more than 60 ChatGPT apps, with further releases expected. Among them is Prism, a free AI workspace designed to support scientific research and collaboration.

GPT-4o, launched in May 2024, gained a loyal following among paid users for its conversational tone. However, its brief removal in August after the release of GPT-5 triggered backlash. OpenAI later restored access and promised advance notice before any retirement.