Kind of amazing the author just takes everything at face value and doesn't even consider the possibility that there's a hidden layer of instructions. Elon likes to meddle with Grok whenever the mood strikes him, leading to Grok's sudden interest in Nazi topics such as South African "white genocide" and calling itself MechaHitler. Pretty sure that stuff is not in the instructions Grok will tell the user about.
The "MechaHitler" things is particularly obvious in my opinion, it aligns so closely to Musk's weird trying-to-be-funny thing that he does.
There's basically no way an LLM would come up with a name for itself that it consistently uses unless it's extensively referred to by that name in the training data (which is almost definitely not the case here for public data since I doubt anyone on Earth has ever referred to Grok as "MechaHitler" prior to now) or it's added in some kind of extra system prompt. The name seems very obviously intentional.
The goal was to make a simple way for recruiters to create coding tests to screen people applying for jobs, and to make the process quick and easy for applicants. The default is a 15 minute multiple choice test across a few different domains.
I will eventually monetise it (when I have more free time) but for now it's free (1000 invites) so I can get feedback and improve it