AI quant interview prep that actually explains your mistakes.
400+ probability, brainteaser, and stochastic-calculus problems. Adaptive selection. Live AI explanations. Built for candidates preparing for SIG, Optiver, Jane Street, Citadel Securities, IMC, Flow Traders, Akuna.
In the classical secretary problem, as n → ∞, what fraction should you reject outright before accepting the next best-so-far candidate?
WHY THIS ISN'T ANOTHER STATIC QUESTION BANK
The selector prioritises techniques where you're below 60% accuracy. Every session targets your weak spots — not whatever's next in an arbitrary order.
Claude rewrites the solution in a different framing — more visual, more intuitive, or more rigorous depending on what the canonical emphasises. Streaming, LaTeX-rendered, on demand.
Your dashboard flags the exact techniques pulling your score down. No guessing what to study next.
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FAQ
Those are static question banks. You answer, see a solution, move on. QuantPrep adapts question selection to your weak spots, and every solution has a live AI rewrite that explains the same idea in a way you might actually click with. The same problem gets explained three different ways if you need.
The canonical solution is one person's mental model of a problem. If it doesn't land for you, you're stuck. The AI generates an alternative — often more visual, often more intuitive — which is especially useful for stochastic and combinatorial problems where multiple valid framings exist.
The question bank is sourced from the canonical quant-interview corpus — the same problem families that show up at the firms listed above and most others. Firm-specific mock tests are next on the roadmap.
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