Ask anything about half a million passages of classic books — and see exactly how the answer was found
The search pipeline · 13 stagesShowHide
Your questionplain English
Embedmeaning + keywords
Bookscoarse layer 1
Chapterscoarse layer 2
Meaning · in scopedense · weight 0.3
Keywords · in scopeBM25 · weight 0.3
Meaning · everywheredense · weight 0.6
Keywords · everywhereBM25 · weight 1.0
Fusionweighted RRF
Rerankcross-encoder, blended
Writercited answer
Judgechecks grounding
Answerwith sources
Ask the library
public-domain books
Ask about anything in the classics — a plot, a character, an argument, a line half-remembered. Every answer is written only from passages the search finds, and cites them.
Ask something and this panel shows the work: the passages behind the answer, how the search narrowed, where the time went, and what the reranker changed.