how much xp does it take co op commanders to level up?

[Duckie]

I got from level 1 to 3 quickly but level 3 to 4 seems to be taking much longer. did they change the xp rate or is there a steep increase in xp cost from level 3 onwards?

[你这是自寻Salute]

I don't know how much EXP it needs but i can still tell you that it takes about 20 hours to level up coop commander to max level 15.
I currently plays Stormgate for about 50 hours and i have a level 15 Auralanna,a level 15 Amara and a level 9 Blockade.It's very slow and takes very much EXP to level coop commander up.I remember that in Starcraft 2 you don't need so much time to level up a commander to MAX level 15.
Level 4 is strange it takes a lot of EXP.But later when you are in LV4 to LV5 it don't seems to take much more EXP.The requirement of leveling up EXP is very strange in current version and after 2 patches FG still haven't fixed it.I doubt they set the EXP requirement like this on purpose to extend this game's play hours by sacrificing player's happiness.