[usgroup]

It depends on how its used. For example, if you have to repeat your performance in a live interview, you'll struggle to do so. Similarly, if the employer uses a confirmatory set which the LLMs get wrong (e.g. adventofcode does that), you will struggle.

The point of leetcode et al is to measure how able you are to solve problems which you have not seen before. It is not a comprehensive evaluation but a useful part of one.