If you want a service that can give you quick answers to academic questions in many subjects, Wolfram|Alpha is a great option. It's a computational knowledge engine that can handle everything from step-by-step math, physics and chemistry solutions to social science, technology and everyday living. It's a great service for students and professionals.
Another service worth a look is StudyX, an all-purpose AI learning assistant that combines the abilities of Chegg, Course Hero and Quizlet. It can help with homework, write essays, research papers and perform deep learning tasks. StudyX is available as browser extensions for Google Docs and Khan Academy, so it's a good option for students.
If you're looking for a more narrow service, Tutorly.ai is an AI-based homework assistant that can give you quick answers to academic questions, write essays and otherwise help you with schoolwork. It's designed to help you get through schoolwork faster with AI technology, and it could be useful for students who want to keep up with their schoolwork.