AI BriefingGPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini to Be Discontinued in ChatGPT
Key point
Starting February 13, 2026, OpenAI will discontinue service for older models including GPT-4o in ChatGPT.
Details
Starting February 13, 2026, alongside the previously announced discontinuation of GPT-5 (Instant and Thinking), OpenAI will remove GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini from ChatGPT. However, there are currently no changes being applied to the API environment.
Notably, GPT-4o is a model that was previously restored once in response to user feedback. Users preferred GPT-4o's distinctive conversational style and warmth, and these requirements were directly reflected in the personality improvements and enhanced creative idea support features of GPT-5.1 and GPT-5.2.
Currently, 99.9% of users have transitioned to GPT-5.2. OpenAI plans to continue improving ChatGPT's personality and creativity going forward, while reducing unnecessary refusals or overly preachy-sounding responses. The company also plans to provide customized experiences for adult users and expand user choice through age prediction features.
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