Is using AI to practice LeetCode cheating?
By Jerry, founder of Nudge · Last updated August 13, 2026
Short answer: it depends what you're using it for, and when. Using AI to get unstuck while you practice is not the same thing as using AI to fake competence you don't have during a real interview. Those are two different behaviors that happen to involve the same underlying technology, and conflating them is where most of this debate goes wrong. I built Nudge, so I have a stake in this question, but I also think the honest answer is more useful to you than a defensive one. Here's how I think about it.
Why this question even exists right now
Over the past couple of years, tools showed up that were built explicitly to cheat live technical interviews. The most talked-about example is Interview Coder, which markets itself as an invisible overlay that reads the interview question off your screen and feeds you a full solution in real time, while you're on a call with an actual interviewer pretending the answer is yours. That's not a gray area. That's a tool engineered to help you misrepresent your own ability to a company that's about to make a hiring decision based on it. It caused real backlash, and it should have: it's the same category of thing as paying someone to take the interview for you, just automated.
The problem is that backlash tends to flatten everything adjacent to it. "AI help while doing LeetCode" and "AI answers fed to you live during a real interview" get talked about as if they're the same behavior. They're not, and the difference matters enough that it's worth actually spelling out.
Two different situations, two different answers
Practicing on your own time. Nobody is grading you. There's no interviewer on the other end of a call trusting that what you type is coming from your own head. When you're grinding problems to get better, the only person you can shortchange is future-you, the version of you who shows up to the real interview. Used well, AI help here is closer to a tutor pointing at the right part of the problem than it is to "cheating." Used badly (asking for the full solution every time you get stuck for more than five minutes), it's still not cheating in any meaningful sense, it's just a bad way to practice, because you'll walk away with a memory of having seen the answer and not the ability to produce it again under pressure.
A live interview, assessment, or exam. Different situation entirely. There's an explicit or implicit claim being made: "this is my thinking, in real time." And a real decision (a job offer, a grade, a certification) rides on that claim being true. Feeding yourself a full solution here, invisibly, isn't a practice technique. It's misrepresentation, full stop, regardless of what tool you used to do it. This is the Interview Coder category, and it's fair to call it cheating without qualification.
Why I built Nudge around hints, not solutions
I'm a third-year computer science student, and like a lot of people grinding LeetCode, I kept running into the same problem. I'd get stuck and basically have two options: stare at the problem for another 30 minutes hoping something clicked, or give up and watch someone else solve it. The first was frustrating. The second usually meant I understood the solution while watching it, but couldn't recreate the reasoning myself the next day.
I wanted something in between: a small push when I needed it, without taking the problem away from me. So I built Nudge to do exactly that: hints, never full solutions. It gives you the kind of hint I always wanted while practicing, enough to get you moving again, but not enough to rob you of figuring it out yourself.
That's a product decision, not just a marketing line. Nudge is deliberately not built to solve the problem for you or to sit invisibly on a call feeding you an answer. It nudges. Hence the name. If you want a tool that hands you a finished solution, Nudge is the wrong tool for that, on purpose.
But a hint-only tool doesn't make the question disappear
I want to be straight about the limits of that design, because pretending a product decision solves an integrity question would be dishonest. Even a hint-only tool can be used somewhere you shouldn't use any outside help at all: a proctored assessment, a take-home your employer explicitly said should be unassisted, a live interview where the expectation is that you're working entirely from your own head. In those situations, "it only gave me a hint" doesn't change the fact that you used outside help where the rules said not to.
Whether a given hint crosses a line depends on the context you use it in, not just on how generous the hint was. That's why our Terms of Service put this plainly: you're responsible for your own conduct, including your compliance with LeetCode's terms of use and any employer, school, or interview-integrity policy that applies to you. Nudge is built to provide hints and guided feedback rather than complete solutions, but how and where you use that assistance (including during a live interview, assessment, or academic exercise) is your responsibility, not Nudge's.
A rough rule of thumb
If you're not sure whether using AI help in a given moment is okay, this is roughly the test I'd apply: would the other person involved (an interviewer, a professor, whoever's evaluating you) be fine with it if they knew? "I used a hint tool while practicing at home so I could get unstuck and actually learn the pattern" passes that test easily. "I had a tool feeding me the answer during the interview and didn't mention it" does not, no matter how it's framed.
Practicing with help so you build real understanding, and performing as if you don't need help when you actually do, are opposite goals. Nudge is built for the first one. What you do in the second situation is on you. But the honest path there is the same as it's always been: put in the reps until you don't need the hint anymore.