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---
dataset_info:
  features:
  - name: idx
    dtype: int64
  - name: names
    dtype: string
  - name: parallel_chain
    dtype: string
  - name: parallel_total_val
    dtype: float64
  - name: parallel_lastname
    dtype: string
  - name: parallel_single_val
    dtype: float64
  - name: forward_chain
    dtype: string
  - name: forward_total_val
    dtype: float64
  - name: forward_lastname
    dtype: string
  - name: forward_single_val
    dtype: float64
  - name: backward_chain
    dtype: string
  - name: backward_total_val
    dtype: float64
  - name: backward_lastname
    dtype: string
  - name: backward_single_val
    dtype: float64
  - name: chaotic_chain
    dtype: string
  - name: chaotic_total_val
    dtype: float64
  - name: chaotic_lastname
    dtype: string
  - name: chaotic_single_val
    dtype: float64
  splits:
  - name: k5
    num_bytes: 178184
    num_examples: 200
  - name: k10
    num_bytes: 333938
    num_examples: 200
  - name: k20
    num_bytes: 647136
    num_examples: 200
  - name: k50
    num_bytes: 1582289
    num_examples: 200
  - name: k100
    num_bytes: 3142590
    num_examples: 200
  - name: k200
    num_bytes: 6266799
    num_examples: 200
  download_size: 4072876
  dataset_size: 12150936
configs:
- config_name: default
  data_files:
  - split: k5
    path: data/k5-*
  - split: k10
    path: data/k10-*
  - split: k20
    path: data/k20-*
  - split: k50
    path: data/k50-*
  - split: k100
    path: data/k100-*
  - split: k200
    path: data/k200-*
task_categories:
- question-answering
language:
- en
tags:
- llm-evaluation
- long-context
- reasoning
- benchmark
---

## NeedleChain: Measuring Intact Long-Context Reasoning Capability of Large Language Models

<p align="center">
    Github: <a href="https://github.com/hyeonseokk/NeedleChain"> Official github repository </a>
<br>
    Paper: <a href="https://arxiv.org/abs/2507.22411"> Official Paper </a>
<br>

---
<p align="center">
  <img src="needlechain.png" width="500"/>
</p>

NeedleChain is a benchmark designed to evaluate LLMs' intact long-context understanding.
Every provided context consists of query-relevant information, requiring a comprehensive understanding to answer the given query.

---

For manual creation of NeedleChain datasets, please refer to our official github repository.