OpenAI has confirmed that it's retiring ChatGPT's most popular model called GPT-4o and several other models, including GPT-5 Instant, GPT-5 Thinking, GPT-4.1, GPT-4.1 mini, and o4-mini.
It's been framed as part of a broader model lineup refresh timed with “the previously announced retirement” of GPT-5 (Instant and Thinking) within ChatGPT.
OpenAI is retiring GPT-4o - again: What it means for you, and why some users are upset ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results