>Since everyone started using AI, more candidates started clearing the first round with flying colors. The platforms had to recalibrate to let in their target percentage.

Is there any proof or data on this? Not saying it's wrong but I'm curious how big the effect actually is.

I'm not convinced it would be caused by AI. More people are laid off, so more unemployed people can grind leetcode all day, and more people are competing for fewer jobs.