As the international version of Tree of Savior is in a one-month closed beta, the game's Japanese version has ended a 5-day closed beta in early October. Apparently, with such a short test period in Japan, Nexon (the game's publisher) aims at allowing players to test the basic features of the game but they may not expect that a few numbers of players actually reach max level – level 200 within couples of days.
Nexon has revealed some statistics of the first JP CBT, showing that most players are at level 1-85. Report says that most players level up pretty slowly and it may push Nexon to increase EXP gain in the game. As of class preference, according to the statistics, there's no a highly popular class although the number of Wizards is a little bit higher than other classes.
The international closed beta of Tree of Savior will end on November 25. Are you playing TOS now and how's your leveling speed? If you need help for leveling, check out Stormakov's fast leveling guide.