Question: how much xp is each level in minecraft?
Answer: The cost to gain each level was made constant, at 17 points per level. Only level 30 is required to get the maximum level of enchanting. XP levels now cost 17 XP Orbs each until level 16, after which the cost per level grows linearly, and the total XP grows quadratically (incorrectly stated "exponentially" by Mojang).