It still hallucinated a python function for me in a library, but upon further questioning, it did provide the code to make that work. The issue with GPT4 now is the limitations placed on it (ChatGPT+), and I don't think it's available via API for the general public?
So most people will be referring to the default ChatGPT 3.5.
So most people will be referring to the default ChatGPT 3.5.