Given that their initial product was called ChatGPT I’m not sure that anyone should expect them to be able to name anything remotely sensibly.
Fun fact, the name Codex predates ChatGPT
https://en.wikipedia.org/wiki/OpenAI_Codex_(language_model)
Obviously it stands for Ghat Phat That. Obviously
Fun fact, the name Codex predates ChatGPT
https://en.wikipedia.org/wiki/OpenAI_Codex_(language_model)