How are attributes allocated?

Whenever a player levels up, they are granted points in 4 attributes: Dexterity, Strength, Intelligence, and Vitality.

Are these stat allocations based on anything the player does or are they set for each level dependent on class? What about attributes gained from Paragon levels?

Solution 1:

Stat allocations are based on class, and are the same across all players.

Unlike Diablo II, there is no input required to assign stats on level-up. It's just free stats that happen the same for everyone!

As far as I'm aware, your character will always gain:

+3 Primary Stat

+2 Vitality

+1 to both Secondary Stats.