Paper Detail

CorporateBench: Large-Scale Q&A Benchmarking with Temporal Knowledge Bases

Sil Hamilton, Albert Yu Sun, Oscar J. Romero, Carl-Leander Henneking, David Mimno, Bishan Yang, Igor Labutov

arxiv Score 12.3

Published 2026-08-27 · First seen 2026-08-28

General AI

Abstract

LLMs are increasingly able to answer complex questions about enterprise-scale document collections. But evaluation is hard: companies don't want to share internal communications, and synthetic datasets have been overly simple. We present CorporateBench (CB), a human-validated multi-task Q&A benchmark whose scale approaches the conditions LLMs encounter in corporate communication networks, with evaluation corpora surpassing 230,000 documents. CB evaluates LLMs across two dimensions (information extraction and knowledge base querying) through four synthetically generated firms ranging from 12 to 10,000 employees. Each corpus is sampled from a temporally evolving knowledge base describing a consistent world, guaranteeing cross-document logical consistency even across hundreds of thousands of documents. We evaluate five LLMs on CB, revealing increasingly poor performance as input size approaches realistic scales. CB provides LLM developers a metric for corporate communication reasoning, filling a crucial gap in the benchmarking ecosystem.

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BibTeX

@article{hamilton2026corporatebench,
  title = {CorporateBench: Large-Scale Q\&A Benchmarking with Temporal Knowledge Bases},
  author = {Sil Hamilton and Albert Yu Sun and Oscar J. Romero and Carl-Leander Henneking and David Mimno and Bishan Yang and Igor Labutov},
  year = {2026},
  abstract = {LLMs are increasingly able to answer complex questions about enterprise-scale document collections. But evaluation is hard: companies don't want to share internal communications, and synthetic datasets have been overly simple. We present CorporateBench (CB), a human-validated multi-task Q\&A benchmark whose scale approaches the conditions LLMs encounter in corporate communication networks, with evaluation corpora surpassing 230,000 documents. CB evaluates LLMs across two dimensions (information e},
  url = {https://arxiv.org/abs/2608.27391},
  keywords = {cs.AI, cs.CL, cs.IR, cs.LG},
  eprint = {2608.27391},
  archiveprefix = {arXiv},
}

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