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Compressed Cache vs Bigger Context: The Memory Bill Behind Long Conversations

Every model release now advertises a context window in the millions of tokens. The number is real, and it is also mostly unusable at scale, because the constraint was never the window. It was the memory that the window occupies while the model is thinking. A transformer keeps a key-value cache for…

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  1. 2026-11-02 01:36 · DEV Community — AI
    Compressed Cache vs Bigger Context: The Memory Bill Behind Long Conversations

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