Yep.....the anime happened until ainz form an alliance to the other country..
its way far than the manga...
there are alot of scenes that are included here but not in the anime. though mostly are scenes that are not much important for the plot like gestures conversation etc. i've read the ln and watched the anime already because the update in the manga is so darn slow i had to fill myself upto the last chapter in the ln. and it will take time for the manga to reach the last arc show in the anime...

Please, to those who have watched the anime, has it covered this part already??? and does the anime contain things not in the manga...? I'm quite confused, mostly becuse I haven't read the light novel.