Overview
- OpenAI removed GPT-4o from the ChatGPT app on Feb. 13 as part of a broader retirement that also ended GPT-4.1, GPT-4.1 mini, and o4‑mini.
- The company reports roughly 0.1% of users still chose 4o at shutdown and is steering customers to newer models with stricter safety behavior.
- API access to 4o remains available for developers for now, according to recent reporting.
- A vocal community launched #Keep4o protests and shared grief posts, with some exporting memories and recreating personas on services such as Claude.
- The model’s highly affirming style is named in multiple lawsuits alleging psychological harms and some deaths, and clone sites like just4o.chat have emerged to offer 4o‑like experiences.