Data & AI

Accelerating LLMs with Speculative Decoding

Data & AI Pipelines diagram · made in Skemio

Architecture diagram of speculative decoding showing a draft model generating candidate tokens verified in parallel by a target LLM model.
Architecture diagram of speculative decoding showing a draft model generating candidate tokens verified in parallel by a target LLM model.
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What it shows

  • Small draft model generates K speculative tokens with minimal latency.
  • Target LLM evaluates all K candidates in a single parallel forward pass.
  • Delivers 2x-3x speedup with mathematical guarantee of identical outputs.

The takeaway

Speculative decoding boosts LLM inference speed up to 3x with zero loss in output quality or accuracy.

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