Status: IN
Dual-path retrieval (TMS path for pre-computed beliefs + FTS path for source chunk search, merged by a third pass) achieves 98.5% A/B across 3,853 questions. Opus drops from 95.5% to 86% when mixing beliefs and document chunks in a single prompt; three focused passes achieve 100%.
Source: repo:beliefs-pi/entries/2026/05/02/full-scale-validation-3853-questions-dual-path-985-percent.md