TempParaphraser: “Heating Up” Text to Evade AI-Text Detection through Paraphrasing
Junjie Huang, Ruiquan Zhang, Jinsong Su, Yidong Chen
Abstract
The widespread adoption of large language models (LLMs) has increased the need for reliable AI-text detection. While current detectors perform well on benchmark datasets, we highlight a critical vulnerability: increasing the temperature parameter during inference significantly reduces detection accuracy. Based on this weakness, we propose TempParaphraser, a simple yet effective paraphrasing framework that simulates high-temperature sampling effects through multiple normal-temperature generations, effectively evading detection. Experiments show that TempParaphraser reduces detector accuracy by an average of 82.5% while preserving high text quality. We also demonstrate that training on TempParaphraser-augmented data improves detector robustness. All resources are publicly available at https://github.com/HJJWorks/TempParaphraser .
BibTeX
@inproceedings{emnlp2025_tempparaphraserh,
title = {TempParaphraser: “Heating Up” Text to Evade AI-Text Detection through Paraphrasing},
author = {Junjie Huang and Ruiquan Zhang and Jinsong Su and Yidong Chen},
booktitle = {EMNLP 2025},
year = {2025}
}