For those noting ChatGPT chats with the o1 models, links can be shared so that it is much easier from everyone here to learn from your prompts.
Here is one such example I did
https://chatgpt.com/share/66e6ce92-d844-8013-ba02-6907eb708caf
The reason this was not noted earlier in this specific topic is that the Lean 4 code needs to be fixed as many of the LLMs, not just the GPT models, were not trained enough to distinguish Lean 3 code from Lean 4 code and much of the Lean 4 code errors are parts of Lean 3 seeping in.