LangChain BlogT1·68 pts
- Using a Compiled Wiki as a memory layer yields 5x higher accuracy than grep-based retrieval tools for multi-source cross-document Q&A.
- Adding an Evidence Graph converts citations into explicit edges, enabling agents to trace supporting evidence, which improves accuracy by another 27% and cuts cost per correct answer by 58%.
- For simple lookups, agents without memory are faster and equally accurate; this architecture is recommended only for repeated complex cross-source reasoning.