It must be called arbitrage or arb for short. So this is what this all about? But earlier, im expecting something different because your title says trading bots, so what came to my mind first are those common trading bots where it helps you trade automatically like gunbot and similar.

I don't know if they are reputable as this is my first time to hear them. They may look reputable according on trust pilot but that is not enough to say that they are truly reputable because anyone can buy fake reviews or they can just create an account there and put positive comments. Obviously don't try them with higher amounts but you can begin with smaller amounts first if you insist to test them out.