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Tag: chunk size

4th September 2026 17 min

RAG framework ranking on SEC filings: seven frameworks, 28 modes, one frozen scorecard

The final ranking of the series: LightRAG, GraphRAG, RAGFlow, LlamaIndex, Haystack, R2R and kotaemon on 33 SEC filings and 40 cross-document questions,…

R2R benchmark on one GPU: hybrid search returned semantic search, and the search limit decided 11 or 22 of 40

Four modes of R2R 3.6.6 on 33 SEC filings, each on its own freshly built pod: as shipped it answered 11 of…

Haystack benchmark on one GPU: BM25 alone beat dense search, and 200-word chunks answered 27 of 40

Five retrieval recipes of Haystack 3.1.1 on 33 SEC filings, each on its own freshly built index: BM25 alone answered 15 of…

LlamaIndex benchmark on one GPU: smaller chunks beat the reranker, and document recall picked the wrong winner

Five retrieval configurations of LlamaIndex on 33 SEC filings, each on its own freshly built index: 19 of 40 answers correct with…