Not sure how old you are, but WolframAlpha has been exactly that for a solid decade and a half. (It was a little late for while I learned calculus, but I used it for reference afterwards.) Also, I’m curious - are GPTs/LLMs actually able to provide consistently accurate explanations and solutions for calculus? They’re historically notoriously bad at even basic arithmetic and algebra, and a quick search seems to confirm them performing similarly with calculus, but I’m open to being wrong and things having improved on that front if you have some evidence.

Finally, echoing the other commenter, you really shouldn’t need a GPT-type tool to do math. If you do, you arguably don’t actually understand the concepts. And I’d honestly be shocked if a LLM could break things down well enough to genuinely help someone who doesn’t understand how to do a calculus problem, having myself tutored friends who didn’t understand things back when I was in school (and using LLMs extensively for my own work).

Some of the best math classes I took didn’t grade homework at all, only exams for which we only had pencil and paper (or some weighted homework as 10% or less of the final grade). But of course, if you didn’t do all the homework, you’d never pass the exams.