What Does “Lost In The Middle” Mean?

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Have you ever given an AI a long prompt with lots of details, only to find it missed one of the most important points? You may have encountered a phenomenon known as “Lost in the Middle.”

In simple terms, Lost in the Middle happens when an AI pays less attention to information buried in the middle of a long prompt. It tends to remember the beginning of your instructions and the most recent details better than the content in between.

Think of it like reading a long email. You probably remember the opening, the conclusion, and the call to action, but the details halfway through are easier to overlook. AI models can behave in a similar way.