Arpit Bhayani personal blog

The Q, K, V Matrices

arpitbhayani.me published 2025-11-269 min read

At the core of the attention mechanism in LLMs are three matrices: Query, Key, and Value. These matrices are how transformers actually pay attention to different parts of the input. In this write-up, we will go through the construction of these matrices from the ground up.

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AI & Machine LearningMath & Algorithms2026

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