Morning Edition · Tuesday, July 14, 2026Published at 1:33 AM EDT · New York
Paper Shows Prompt Formatting Alone Can Flip Language-Model Leaderboards
A token-controlled study introduces a Format Sensitivity Index measuring how much identical questions in different wrappers move model scores.

A paper posted today argues that prompt wrappers that differ only in formatting can change model scores enough to reverse leaderboard conclusions. The authors study this variance under a token-controlled protocol, holding the number of toke…
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