Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Beta Level cap and progression

You've got something wrong.

You get 1 Ability point per level for levels 2-5.
You get 2 Ability points per level for levels 6-11.
You get 3 Ability point per level for levels 12+.

There are supposedly also some free attributes and ability points you can get from questing and leveling, but how many is unknown.