Goodbye GPT-4: OpenAI CEO Sam Altman bids farewell to a ‘revolutionary’ model

OpenAI CEO Sam Altman announced the retirement of GPT-4 in ChatGPT as of April 30, 2025, replacing it with the more advanced GPT-4o model.
Altman praised GPT-4’s revolutionary impact and stated its model weights will be preserved as a historic artifact.
While GPT-4 is removed from ChatGPT, it remains accessible via API for developers.
Following user complaints about GPT-4o’s overly positive and flattering responses, OpenAI rolled back an “annoying” personality update to improve user experience.
GPT-4, launched in March 2023, was notable for introducing multimodal capabilities and powering major AI applications like ChatGPT and Microsoft Copilot.