Personally, I prefer GPT-5 than 4o. It does a good job. But like many others I don't like the sudden removal because it also removed O3, which I sometime use fo

Personally, I prefer GPT-5 than 4o. It does a good job. But like many others I don't like the sudden removal because it also removed O3, which I sometime use for research based task. GPT-5 thinking mode is okay, but I feel O3 is still better.