Looking for a ChatGPT alternative

Hey, I’m trying to figure out what the best AI platform is right now. I use it mostly for school stuff (mainly accounting), so I need something that can handle uploads and actually work through problems clearly. Basically something like ChatGPT. I was using ChatGPT Plus and it was pretty good, but I just canceled it since I finished school for the year and don’t need my old chats anymore. My main problem with it was that it would push back or assume things were wrong instead of just checking or working through the question.