ChatGPT finally disables 'GPT-4o' and 'GPT-4.1'

OpenAI has announced that it will remove four models from ChatGPT's available models list: GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini. These models will become unusable on February 13, 2026.

Retiring GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini in ChatGPT | OpenAI
https://openai.com/index/retiring-gpt-4o-and-older-models/

GPT-4o was a model that appeared in May 2024 and was characterized by warm and friendly responses. GPT-4o became unavailable in ChatGPT with the release of GPT-5 in August 2025, but after receiving a flood of comments that 'GPT-5's responses were too cold compared to GPT-4o', the unusual step of reviving GPT-4o was taken.

OpenAI temporarily revives GPT-4o after user complaints about GPT-5 - GIGAZINE

OpenAI then adjusted GPT-5's personality to suit user preferences . Furthermore, GPT-5.1, released in November 2025, allowed users to customize its user experience, including friendliness. This feature was carried over to GPT-5.2, released in December 2025.

'GPT-5.1' brings back warm responses to ChatGPT and new personalities are added - GIGAZINE

According to OpenAI, at the time of writing, the majority of users were using GPT-5.2, and the number of users using GPT-4o had dropped to just 0.1%. In response to this, OpenAI decided to exclude 'GPT-4o', 'GPT-4.1', 'GPT-4.1 mini', and 'OpenAI o4-mini' from the list of available models for ChatGPT.

The four models will become unusable on February 13, 2026. OpenAI explains, 'We understand that losing GPT-4o will be frustrating for some users. This decision was not made lightly. While retiring models is not easy, retiring older models allows us to focus on improving the current models used by many of our users.'

The four models will still be available via API.