Prefix Sliding technique boosts LLM inference speed by 3x
iScienceLuvr · x · 2026-08-27
Research shows that most intermediate reasoning tokens lose importance over time, questioning the cost of retaining them. The proposed 'Prefix Sliding' method discards irrelevant tokens during inference. It achieves 3x speedup without training and better performance with RL training for traces over 100k tokens.
Related event: Prefix Sliding triples inference speed with no quality loss(4 posts)→
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