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Starting Friday, OpenAI will cease providing access <\/a> to five legacy ChatGPT models, including the popular but controversial GPT-4o model.<\/p>\n The 4o model has been at the center of a number of lawsuits<\/a> concerning user self-harm, delusional behavior, and AI psychosis<\/a>. It remains OpenAI\u2019s highest scoring model for sycophancy<\/a>.<\/p>\n In addition to GPT-4o, the GPT-5, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini models have also been deprecated.<\/p>\n OpenAI intended to retire GPT-4o in August, when it unveiled the GPT-5 model<\/a>. But at the time, there was enough backlash for OpenAI to keep the legacy model available for paid subscribers, who could manually choose to interact with that model. In a recent blog post, OpenAI noted that only 0.1% of customers have been using GPT-4o, but for a company with 800 million weekly active users<\/a>, that small percentage still amounts to 800,000 people.<\/p>\n Thousands of users have rallied against the retirement of 4o<\/a>, citing their close relationships with the model.<\/p>\n<\/div>\n