Speculative decoding accelerates LLM inference by 2-3× without quality loss. A small draft model generates multiple candidate tokens, which a larger target model verifies in parallel during a single forward pass. The technique addresses memory bandwidth bottlenecks in autoregressive generation by reducing sequential operations.

11m read timeFrom machinelearningmastery.com
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Table of contents
IntroductionWhy Large Language Model Inference Is SlowHow Speculative Decoding WorksUnderstanding the Key Performance MetricsImplementing Speculative DecodingWhen to Use Speculative Decoding (And When Not To)Choosing a Good Draft ModelWrapping Up

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