Prefix Sliding Speeds Up Inference 3x by Dropping Stale Tokens

A new paper proposes Prefix Sliding, which discards intermediate reasoning tokens outside the prefix and recent window, as their importance decays quickly, speeding up test-time inference by about 3x.

2026-08-27 ~ 2026-08-27 · 2 related posts

• Prefix Sliding technique boosts LLM inference speed by 3x — iScienceLuvr · 2026-08-27
• Prefix Sliding: discarding stale reasoning tokens makes test-time scaling 3x faster — Bedrovelsen · 2026-08-27