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Equation 7 · What Actually Happens Inside a Very Long Claude Context Window

What does this equation mean?

O(k2)O(k^2)

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This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text. Read the equation part by part below; each part has a contextual explanation and a link to its mathematical background.

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OO

Symbol O

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

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k2k^2

Symbol k^2

The square of k: multiply k by itself.

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superscript

superscript

A raised number can be a power. When it is a label or bound, it selects a case or the upper limit of a sum; the formula’s structure distinguishes these uses.

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What the article says around this equation

Two. Hybrid retrieval-plus-long-context architectures, in the Self-Route style, become the default production pattern for large, heterogeneous document collections, with a full long-context pass reserved for queries a cheaper first pass flags as difficult, on the assumption that the cost asymmetry between O(k2k^2) and O(n2n^2) processing does not disappear as windows grow further. Disconfirmed if , by 2028, production systems handling large heterogeneous corpora have converged on feeding full context on every request as the standard approach, with no routing step.

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