Illustrated Guide to Speculative Decoding

An illustrated thread explains why autoregressive decoding is slow and bandwidth-bound, and highlights speculative decoding's key insight that generating tokens is serial while verifying them is parallel, yielding up to k+1 tokens per forward pass without changing the output distribution.

2026-10-22 ~ 2026-10-22 · 3 related posts

• Speculative Decoding Explained: How Draft Models Yield k+1 Tokens Per Pass Without Changing the Distribution — cneuralnetwork · 2026-10-22
• Why autoregressive LLM decoding is slow: the memory bandwidth bottleneck — cneuralnetwork · 2026-10-22
• The core trick of speculative decoding: generation is serial, verification is parallel — cneuralnetwork · 2026-10-22