Speculative Decoding: Acceptance Rules and Speedup Trade-offs

The series explains speculative decoding's acceptance rule—keeping only the longest accepted prefix per verification—and its trade-offs: expected acceptance rate equals 1−TV(p,q), so larger drafts draft slower while closer draft models accept more.

2026-10-22 ~ 2026-10-22 · 2 related posts

• Only consecutive accepted prefixes count: one pass commits up to k+1 tokens — cneuralnetwork · 2026-10-22
• Speculative decoding's tradeoff: acceptance rate α = 1 − TV(p,q) vs. draft speed — cneuralnetwork · 2026-10-22