Beyond Parallel Blindness: Information Floors and Model Gaps in Block Drafting
Block drafters propose several tokens in one forward pass, before earlier target tokens are realised. Their rejection mixes two losses: missing within-block path information and imperfect modelling of observable information. Accepted length cannot distinguish them. We separate the two with an information floor, the minimum expected rejection at a specified conditioning order; rejection above this floor is the model gap. Estimating both from target rollouts across four domains, four open-weight targets, and a frontier API target yields three findings. First, the all-parallel floor reaches $0.28
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- LinkedLinked via arxiv author · 85%Xinwei Qiang →
“Beyond Parallel Blindness: Information Floors and Model Gaps in Block Drafting”
- LinkedLinked via arxiv author · 85%Tianxiang Fang →
“Beyond Parallel Blindness: Information Floors and Model Gaps in Block Drafting”
- LinkedLinked via arxiv author · 85%Hongchang Chen →
“Beyond Parallel Blindness: Information Floors and Model Gaps in Block Drafting”
- LinkedLinked via arxiv author · 85%Yue Guan →
“Beyond Parallel Blindness: Information Floors and Model Gaps in Block Drafting”
- LinkedLinked via arxiv author · 85%Yufei Ding →
“Beyond Parallel Blindness: Information Floors and Model Gaps in Block Drafting”