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Context engineering is mostly deciding what to leave out

This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.

Most advice about context windows is about fitting more in. Bigger windows, more retrieved documents, the whole file instead of the function. In practice the thing that has improved my results the most is the opposite move: getting the junk out. A window packed with marginally relevant material mak…

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  1. 2026-09-12 03:02 · DEV Community — Machine Learning
    Context engineering is mostly deciding what to leave out

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