GPT-4 TBH. A friend of mine has the premium version of ChatGPT and has early access to GPT-4. Him and I were working on the final project of a course. He wrote the report (with LaTeX) with the help of ChatGPT and the result was amazing and mind-blowing. I'll use ChatGPT more 'cause it saves a lot of time. I even heard it can do math. I'm excited and scared for the future at the same time ...