OpenAI has announced plans to retire several older ChatGPT models, including GPT-4o, GPT-4.1, GPT-4.1 mini, and o4-mini, effective February 13, 2026.
The decision was disclosed in a blog post published on Thursday, January 29, 2026. OpenAI clarified that the change applies only to ChatGPT and will not affect its API offerings.
According to the company, the move reflects a shift in user behavior and improvements in newer models, particularly GPT-5.1 and GPT-5.2. OpenAI said the vast majority of users have already migrated to GPT-5.2, with just 0.1 percent of daily users still relying on GPT-4o.
