# LlamaIndex releases Boo Bench, a 179-page doc parser stress test

> Original title: We built a haunted house for doc parsers 🎃

- Source: LlamaIndex
- Published: 2026-10-29T16:36:16.000Z
- Bad Influence: https://badinfluence.news/items/tdt0gj2ep0lgfhxlrr5ewmvra
- Original: https://x.com/llama_index/status/2115845183027716486

## Summary

LlamaIndex has built Boo Bench, a 179-page benchmark designed to push document parsers into repetition loops. In one case, a model saw 246 redaction x's on a page and wrote 23,004 of them. Results, a leaderboard, a paper, and the dataset are available on LlamaIndex's site and Hugging Face.

## Post

We built a haunted house for doc parsers 🎃

Boo Bench is 179 pages that push parsers into repetition loops. One model saw 246 redaction x’s on a page and wrote 23,004 of them.

Results in thread!

Leaderboard + paper: https://llamaindex.ai/benchmarks/boobench
Dataset: https://huggingface.co/datasets/llamaindex/BooBench

![](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FHVz9-luXYAEIASr.jpg&mode=thumb&exp=1793491200&sig=19ecc1f57af5bbff)