Mathos | AI Math Solver & Calculator

Mathos AI, previously known as MathGPTPro, is an AI-powered math solver, calculator, and tutor built by a Y Combinator-backed team whose founders have been recognized in Forbes 30 Under 30. The core solver breaks problems into step-by-step explanations with adjustable detail, and an AI tutor mode watches a student work through a problem and flags the exact step where a mistake happens, rather than only checking the final answer. The tool also generates short animated solution videos in five to ten seconds, produces quizzes and flashcards from solved problems, and includes an adaptive learning system designed to find prerequisite gaps instead of just repeating a failed topic. Mathos AI covers algebra, calculus, geometry, trigonometry, optimization, and physics, and is available through a website as well as native iOS and Android apps. Pricing includes a free tier plus a paid Pro plan with a three-day trial. The company states it is used by millions of students across more than 100 countries, spanning high school through university and including STEM disciplines like civil engineering. The site does not describe a public API or third-party integrations, and while it claims higher accuracy than general-purpose models like GPT-4o on math problems, that comparison is Mathos AI's own benchmark rather than an independently verified figure.