Levels.FYI is useful, but wildly inaccurate in my experience, especially as you get further up the levels

The higher up you go, the less reporting you get, less data is usually incorrect.

Out of curiosity, would you say the numbers on Levels.fyi are generally too low or too high?

Really hard to generalize. I think people get such varied offers, and depending on what year they’re on & how their vesting schedule works it could be higher or lower. Companies also change vesting schedules and such, and I assume levels.fyi data would get stale too.