Entity-Only Index With Relations Materialized at Inference Reaches 95.6% on SWE-bench Verified With Zero Pre-Built Edges

arXiv 2608.26602·medium signalXBlueskyLinkedInCopy link

arXiv 2608.26602 proposes skipping the maintained code-relation graph entirely: expose only entities through a two-layer index separating global routing from local entity focus, and materialize relations at inference conditioned on the task. Evaluated on DeepSeek-V4-Flash against SWE-bench Verified, base, one-layer and two-layer conditions score 92.1%, 94.2% and 95.6% respectively with no pre-built entity-relation edges. For anyone maintaining a code knowledge graph for agent navigation, this is a direct argument that the ongoing maintenance burden may be buying 3.5 points that a task-conditioned index gets for free.