A Survey of LLM Prompt Datasets: Taxonomy, Linguistic Patterns, and Practical Uses

Yuanming Zhang, Yan Lin, Arijit Khan, Huaiyu Wan


Abstract
We compile 129 public LLM prompt datasets with more than 1.22TB and more than 673M instances and organise them into a unified taxonomy. We use seven datasets for detailed analysis and identify lexical, syntactic, and semantic patterns that distinguish prompts from general text. We evaluate these features in prompt filtering, source domain routing, and elicited response quality analysis. A 63 dimensional linguistic feature set that can be extracted on a CPU achieves over 91% of the F1 of GPU sentence embeddings and reduces latency per request by nearly half. In cross dataset routing, sentence embeddings reach 0.74 Macro-F1 and a structural feature subset reaches 0.61, compared with the chance level of 0.20. Structural routing features remain negatively associated with elicited response quality after prompt length is controlled on UltraFeedback. The apparent positive association of type to token ratio becomes much smaller under the same control. These findings support prompt processing pipelines that combine efficient structural features with robust semantic routing. Our catalogue, annotations, and code are given at https://github.com/ymzhang-cs/prompt-dataset-analysis.
Anthology ID:
2026.findings-emnlp.397
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2026
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
Findings
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
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Pages:
8384–8413
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URL:
https://aclanthology.org/2026.findings-emnlp.397/
DOI:
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Cite (ACL):
Yuanming Zhang, Yan Lin, Arijit Khan, and Huaiyu Wan. 2026. A Survey of LLM Prompt Datasets: Taxonomy, Linguistic Patterns, and Practical Uses. In Findings of the Association for Computational Linguistics: EMNLP 2026, pages 8384–8413, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
A Survey of LLM Prompt Datasets: Taxonomy, Linguistic Patterns, and Practical Uses (Zhang et al., Findings 2026)
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https://aclanthology.org/2026.findings-emnlp.397.pdf