ProofStep
An AI proof tutor that walks math students through arguments step-by-step, verifies their work, and explains classic results using intuition and visuals.
undergraduate math students and high schoolers learning formal proof writing
- Step-by-Step Proof Checker: paste a proof, get a line-by-line critique pointing out exactly where the reasoning breaks
- Classic Theorem Tours: guided walks of famous results (sphere packing, Ramsey, Gödel-style) with intuition first, formality second
- Progressive Hint Mode: gives increasingly specific hints when a student is stuck, never a full jump to the answer
- Formal Verification Badge: shows the formal Lean-style proof of the result so students see the rigorous version after the intuition
OpenAI's ten-proofs release just made headlines by formally proving major math theorems with AI, and educators are racing to figure out how to bring rigorous proof tools into classrooms.
OpenAI's ten-proofs release with Lean formalizations is confirmed real news, and Lean adoption in undergraduate math is documented in Springer pedagogy research; demand for AI math help broadly is high with dozens of competitors already in market.Ten advances in mathematics and theoretical computer science - OpenAI ↗Using the proof assistant Lean in undergraduate mathematics - Springer ↗
Crowded general AI math tutor space (iTutor, StudyX, ThinkFlow, RauGen, Wolfram) but no clear winner for proof-writing tutoring specifically; Lean itself is being explored pedagogically but steep syntax is a barrier and AI-guided proof tutoring appears to be an open niche.11 Best AI Math Tutoring Tools 2026 (Step-by-Step Help) ↗Using the proof assistant Lean in undergraduate mathematics - Springer ↗
Students demonstrably pay for math help — Wolfram Alpha Pro runs $5–9.99/mo with step-by-step solutions, Chegg/iTutor monetize at similar tiers; willingness to pay for proof help specifically is less validated but the AI-tutoring subscription model is proven.Pricing Plans: Wolfram|Alpha Pro ↗Wolfram Alpha Pricing 2026 — Plans & Costs | AISO Tools ↗
Proof tutoring is a durable academic need, and the formal-proofs trend (Lean certificates, OpenAI's formalization push, First Proof competition) suggests rising institutional and student interest for years; not a fad but tied to long-running curriculum needs.Ten advances in mathematics and theoretical computer science - OpenAI ↗First Proof is AI's toughest math test yet. The results are mixed ↗
Non-trivial build: requires deep integration with Lean/Coq for verification, careful prompt engineering to avoid hallucinated proof steps, and visual rendering for geometric intuition; generalist LLMs still hallucinate on multi-step formal proofs (per First Proof results).First Proof is AI's toughest math test yet. The results are mixed ↗Using the proof assistant Lean in undergraduate mathematics - Springer ↗