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Equation 12 · Part 1 · Comparing the Main Approaches to AI Inference Economics

Symbol u

uu
uu

What this part means

u is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

u is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

Below the break-even utilization u∗u^{*} , paying on demand only for the hours actually used is cheaper than holding a reservation that sits partly idle; above it, the reservation wins. What no published rate card can supply is u itself — a property of the buyer’s own traffic, not of any vendor’s pricing page — which is exactly why “is reserved capacity worth it” has no answer that holds across buyers, only a formula that turns a buyer’s own utilization forecast into one.

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Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

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Sources cited in the article section

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