the paper (arXiv 2609.03874) exploits a corpus's global structure (e.g. a table of contents) inside a finetuned Differentiable Search Index and scores Recall@1 82.6% on its new SearchTome benchmark vs DSI's 76.9% and BM25's 59.5%; the AlphaSignal "65x less than standard RAG" headline does not appear in the paper's abstract, which reports the <0.05% figure for its generative IR system.