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The most effective techniques to detect LLM-generated text rely on inserting a detectable signature -- or watermark -- during the model's decoding process. Most existing watermarking methods require access to the underlying LLM's logits,…

Machine Learning · Computer Science 2024-10-14 Yapei Chang , Kalpesh Krishna , Amir Houmansadr , John Wieting , Mohit Iyyer

As large language models (LLMs) reach human-like fluency, reliably distinguishing AI-generated text from human authorship becomes increasingly difficult. While watermarks already exist for LLMs, they often lack flexibility and struggle with…

Computation and Language · Computer Science 2025-06-18 Georg Niess , Roman Kern

Large Language Models (LLMs) perform impressively well in various applications. However, the potential for misuse of these models in activities such as plagiarism, generating fake news, and spamming has raised concern about their…

Computation and Language · Computer Science 2025-01-20 Vinu Sankar Sadasivan , Aounon Kumar , Sriram Balasubramanian , Wenxiao Wang , Soheil Feizi

The proliferation of large language models (LLMs) in generating content raises concerns about text copyright. Watermarking methods, particularly logit-based approaches, embed imperceptible identifiers into text to address these challenges.…

Computation and Language · Computer Science 2025-02-06 Yiyang Luo , Ke Lin , Chao Gu , Jiahui Hou , Lijie Wen , Ping Luo

Text watermarking for large language models (LLMs) enables model owners to verify text origin and protect intellectual property. While watermarking methods for closed-source LLMs are relatively mature, extending them to open-source models…

Cryptography and Security · Computer Science 2025-10-29 Jiaqi Xue , Yifei Zhao , Mansour Al Ghanim , Shangqian Gao , Ruimin Sun , Qian Lou , Mengxin Zheng

Watermarking has emerged as a crucial method to distinguish AI-generated text from human-created text. Current watermarking approaches often lack formal optimality guarantees or address the scheme and detector design separately. In this…

Cryptography and Security · Computer Science 2025-10-28 Haiyun He , Yepeng Liu , Ziqiao Wang , Yongyi Mao , Yuheng Bu

The radioactive nature of Large Language Model (LLM) watermarking enables the detection of watermarks inherited by student models when trained on the outputs of watermarked teacher models, making it a promising tool for preventing…

Computation and Language · Computer Science 2025-05-27 Leyi Pan , Aiwei Liu , Shiyu Huang , Yijian Lu , Xuming Hu , Lijie Wen , Irwin King , Philip S. Yu

As large language models (LLM) are increasingly used for text generation tasks, it is critical to audit their usages, govern their applications, and mitigate their potential harms. Existing watermark techniques are shown effective in…

Machine Learning · Computer Science 2024-08-09 Chaoyi Zhu , Jeroen Galjaard , Pin-Yu Chen , Lydia Y. Chen

Watermarking has emerged as a promising solution for tracing and authenticating text generated by large language models (LLMs). A common approach to LLM watermarking is to construct a green/red token list and assign higher or lower…

Cryptography and Security · Computer Science 2025-10-27 Li An , Yujian Liu , Yepeng Liu , Yuheng Bu , Yang Zhang , Shiyu Chang

Large language models generate high-quality responses with potential misinformation, underscoring the need for regulation by distinguishing AI-generated and human-written texts. Watermarking is pivotal in this context, which involves…

Machine Learning · Computer Science 2024-06-07 Mingjia Huo , Sai Ashish Somayajula , Youwei Liang , Ruisi Zhang , Farinaz Koushanfar , Pengtao Xie

Watermarking has recently emerged as an effective strategy for detecting the generations of large language models (LLMs). The strength of a watermark typically depends strongly on the entropy afforded by the language model and the set of…

Computation and Language · Computer Science 2026-02-05 Dara Bahri , John Wieting

The growing deployment of Large Language Models (LLMs) has raised concerns about their misuse in generating harmful or deceptive content. To address this issue, watermarking methods have been proposed to embed identifiable multi-bit…

Computation and Language · Computer Science 2026-05-12 Jiahao Xu , Rui Hu , Olivera Kotevska , Zikai Zhang

Watermarking approaches are proposed to identify if text being circulated is human or large language model (LLM) generated. The state-of-the-art watermarking strategy of Kirchenbauer et al. (2023a) biases the LLM to generate specific…

Cryptography and Security · Computer Science 2024-03-25 Qilong Wu , Varun Chandrasekaran

LLM watermarks allow tracing AI-generated texts by inserting a detectable signal into their generated content. Recent works have proposed a wide range of watermarking algorithms, each with distinct designs, usually built using a bottom-up…

Cryptography and Security · Computer Science 2026-02-09 Thibaud Gloaguen , Robin Staab , Nikola Jovanović , Martin Vechev

Text watermarking for Large Language Models (LLMs) has made significant progress in detecting LLM outputs and preventing misuse. Current watermarking techniques offer high detectability, minimal impact on text quality, and robustness to…

Cryptography and Security · Computer Science 2025-01-29 Aiwei Liu , Sheng Guan , Yiming Liu , Leyi Pan , Yifei Zhang , Liancheng Fang , Lijie Wen , Philip S. Yu , Xuming Hu

Amidst rising concerns about the internet being proliferated with content generated from language models (LMs), watermarking is seen as a principled way to certify whether text was generated from a model. Many recent watermarking techniques…

Cryptography and Security · Computer Science 2024-11-11 Saksham Rastogi , Danish Pruthi

The widespread adoption of large language models (LLMs) necessitates reliable methods to detect LLM-generated text. We introduce SimMark, a robust sentence-level watermarking algorithm that makes LLMs' outputs traceable without requiring…

Computation and Language · Computer Science 2025-09-12 Amirhossein Dabiriaghdam , Lele Wang

The increasing use of Large Language Models (LLMs) for generating highly coherent and contextually relevant text introduces new risks, including misuse for unethical purposes such as disinformation or academic dishonesty. To address these…

Computation and Language · Computer Science 2024-10-16 Zhenyu Xu , Kun Zhang , Victor S. Sheng

Recent advances in Large Language Models (LLMs) have led to significant improvements in natural language processing tasks, but their ability to generate human-quality text raises significant ethical and operational concerns in settings…

Cryptography and Security · Computer Science 2025-01-27 Adam Block , Ayush Sekhari , Alexander Rakhlin

We show the viability of tackling misuses of large language models beyond the identification of machine-generated text. While existing zero-bit watermark methods focus on detection only, some malicious misuses demand tracing the adversary…

Computation and Language · Computer Science 2024-03-21 KiYoon Yoo , Wonhyuk Ahn , Nojun Kwak