Best GenAI service for tutoring?

Hi!

I’m wondering if anyone has made a comparison between online services like Claude/ChatGPT/CoPilot/etc. and figured out which of them could provide the best AI tutor experience?

My own experience with ChatGPT is that it ends up doing my tasks for me, even when I have stressed the importance of not providing straight answers. I need it to check my work and provide guidance, not doing my work for me.

Any recommendations? I don’t mind if a model needs subscription.