Buying evaluations
How the meters work, how to top up, and what happens when you run out mid-project.
Evaluations are counted on two meters, and which one a run touches is decided by your plan rather than by what you pick at the time.
Deriving it from the plan rather than from the visibility you chose closes a hole: visibility can be flipped while a run is queued, and an intent-keyed meter would let a run be charged to one counter and returned from the other.
Topping up
Owners buy more from the billing page. A purchase is available immediately, and packs are spent before the plan's own allowance so nothing you bought expires while an included run sits unused.
Running low
Your remaining balance is shown in the header while you are signed in, and you are warned when you have used most of it, with enough left to raise a purchase order before you hit the wall.