From Friday, this will be possible thanks to OpenAI stop providing access to five older ChatGPT models, including the popular but controversial GPT-4o model.
The 4o model has been at the center of multiple lawsuits involving user self-harm, delusional behavior, and AI psychosis. That leaves OpenAI highest scoring flattery model.
In addition to GPT-4o, GPT-5, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini have also been discontinued.
OpenAI intended to retire GPT-4o in August when it unveiled the GPT-5 model. However, at the time, OpenAI faced enough opposition to keep the older model available to paid subscribers, who could manually choose to interact with the model. In a recent blog post, OpenAI noted that only 0.1% of customers exploit GPT-4o, but for a company with 800 million weekly lively users, that diminutive percentage is still 800,000 people.
Thousands of users opposed 4o’s retirement, citing their close relationship with the model.