Cornerman vs LockedIn AI

LockedIn AI earned a reputation as the go-to AI copilot for coding interviews specifically. If you're interviewing for engineering roles, you've probably seen it recommended. The pitch is straightforward: during a coding round, the AI generates a complete solution in real time, which you then read and type into the editor.

That approach works — until it doesn't. The problem with reading a generated solution is twofold. First, experienced interviewers can spot it: the cadence is wrong, the variable names are too clean, the explanation doesn't quite match how the code would actually be written in-the-moment. Second, the moment the interviewer asks a follow-up — 'walk me through your reasoning on line twelve,' 'what's the time complexity,' 'what if the input was already sorted?' — you're in trouble if you don't actually understand what you just typed.

Cornerman takes a different approach, even in coding rounds. Instead of generating a full solution, it coaches your thinking: 'start by clarifying the constraints,' 'think about the edge case where the array is empty,' 'this is O(n²) — can you think of an O(n log n) approach?' You still write the code. You still own the reasoning. But you have a coach in your ear keeping you on track.

Then there's the price. LockedIn AI's plans run $35–$70/month. Cornerman is $19–$39/month. On an equivalent tier, you're saving 44–46%. Over the three-month arc of an active job search, that's real money.

Cornerman also handles behavioral and general interview rounds with the same focus. LockedIn AI has some support for these, but the coding copilot is the flagship feature. If you're running a mixed interview loop — behavioral, system design, coding, culture fit — Cornerman gives you one tool that handles all of it.

The short version: if you want an AI that types code for you, LockedIn AI. If you want an AI that coaches you through writing the code yourself for half the price, Cornerman.