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Speculative decoding accelerates large language model (LLM) inference by using a lightweight draft model to propose tokens that are later verified by a stronger target model. While effective in centralized systems, its behavior in…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-11-18 Jingwei Song , Wanyi Chen , Xinyuan Song , Max , Chris Tong , Gufeng Chen , Tianyi Zhao , Eric Yang , Bill Shi , Lynn Ai

To mitigate the high inference latency stemming from autoregressive decoding in Large Language Models (LLMs), Speculative Decoding has emerged as a novel decoding paradigm for LLM inference. In each decoding step, this method first drafts…

Computation and Language · Computer Science 2024-06-05 Heming Xia , Zhe Yang , Qingxiu Dong , Peiyi Wang , Yongqi Li , Tao Ge , Tianyu Liu , Wenjie Li , Zhifang Sui

Large language model (LLM)-based automatic speech recognition (ASR) has recently attracted a lot of attention due to its high recognition accuracy and enhanced multi-dialect support. However, the high decoding latency of LLMs challenges the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-29 Linye Wei , Shuzhang Zhong , Songqiang Xu , Runsheng Wang , Ru Huang , Meng Li

Speculative decoding has emerged as a promising technique to accelerate the inference of Large Language Models (LLMs) by employing a small language model to draft a hypothesis sequence, which is then validated by the LLM. The effectiveness…

Computation and Language · Computer Science 2024-07-24 Zhuocheng Gong , Jiahao Liu , Ziyue Wang , Pengfei Wu , Jingang Wang , Xunliang Cai , Dongyan Zhao , Rui Yan

Large Language Models (LLMs) have become more prevalent in long-context applications such as interactive chatbots, document analysis, and agent workflows, but it is challenging to serve long-context requests with low latency and high…

Computation and Language · Computer Science 2025-04-03 Ranajoy Sadhukhan , Jian Chen , Zhuoming Chen , Vashisth Tiwari , Ruihang Lai , Jinyuan Shi , Ian En-Hsu Yen , Avner May , Tianqi Chen , Beidi Chen

Large language models (LLMs) underpin interactive multimedia applications such as captioning, retrieval, recommendation, and creative content generation, yet their autoregressive decoding incurs substantial latency. Speculative decoding…

Artificial Intelligence · Computer Science 2026-02-06 Hanyu Wei , Zunhai Su , Peng Lu , Chao Li , Spandan Tiwari , Ashish Sirasao , Yuhan Dong

Speculative decoding (SD), where a draft model provides multiple candidate tokens for the target model to verify in parallel, has demonstrated significant potential for accelerating LLM inference. Yet, existing SD approaches adhere to a…

Machine Learning · Computer Science 2025-09-22 Enyu Zhou , Kai Sheng , Hao Chen , Xin He

Efficient inference in large language models (LLMs) has become a critical focus as their scale and complexity grow. Traditional autoregressive decoding, while effective, suffers from computational inefficiencies due to its sequential token…

Computation and Language · Computer Science 2024-11-28 Hyun Ryu , Eric Kim

Accelerating the inference of large language models (LLMs) is a critical challenge in generative AI. Speculative decoding (SD) methods offer substantial efficiency gains by generating multiple tokens using a single target forward pass.…

Computation and Language · Computer Science 2025-06-12 Nadav Timor , Jonathan Mamou , Daniel Korat , Moshe Berchansky , Gaurav Jain , Oren Pereg , Moshe Wasserblat , David Harel

Speculative decoding accelerates Large Language Model (LLM) inference by employing a small speculative model (SSM) to generate multiple candidate tokens and verify them using the LLM in parallel. This technique has been widely integrated…

Computation and Language · Computer Science 2025-05-26 Ruixiao Li , Fahao Chen , Peng Li

Speculative decoding (SD) has proven effective for accelerating LLM inference by quickly generating draft tokens and verifying them in parallel. However, SD remains largely unexplored for Large Vision-Language Models (LVLMs), which extend…

Machine Learning · Computer Science 2026-01-29 Minjae Lee , Wonjun Kang , Byeongkeun Ahn , Christian Classen , Kevin Galim , Seunghyuk Oh , Minghao Yan , Hyung Il Koo , Kangwook Lee

Speculative decoding (SD) has become a popular technique to accelerate Large Language Model (LLM) inference, yet its real-world effectiveness remains unclear as prior evaluations rely on research prototypes and unrealistically small batch…

Computation and Language · Computer Science 2026-03-19 Xiaoxuan Liu , Jiaxiang Yu , Jongseok Park , Ion Stoica , Alvin Cheung

Speculative decoding accelerates LLM inference by using a draft model to look ahead, but gains are capped by the cost of autoregressive draft generation: increasing draft size elevates acceptance rates but introduces additional latency…

Computation and Language · Computer Science 2025-12-15 Nikhil Bhendawade , Kumari Nishu , Arnav Kundu , Chris Bartels , Minsik Cho , Irina Belousova

Speculative decoding (SD) has emerged as a widely used paradigm to accelerate LLM inference without compromising quality. It works by first employing a compact model to draft multiple tokens efficiently and then using the target LLM to…

Computation and Language · Computer Science 2025-03-07 Heming Xia , Yongqi Li , Jun Zhang , Cunxiao Du , Wenjie Li

Diffusion Large Language Models (dLLMs) offer fast, parallel token generation, but their standalone use is plagued by an inherent efficiency-quality tradeoff. We show that, if carefully applied, the attributes of dLLMs can actually be a…

Machine Learning · Computer Science 2026-01-29 Rui Pan , Zhuofu Chen , Hongyi Liu , Arvind Krishnamurthy , Ravi Netravali

Large language models (LLMs) achieve strong performance across diverse tasks but suffer from high inference latency due to their autoregressive generation. Speculative Decoding (SPD) mitigates this issue by verifying candidate tokens in…

Computation and Language · Computer Science 2026-04-30 Jinze Li , Yixing Xu , Guanchen Li , Shuo Yang , Jinfeng Xu , Xuanwu Yin , Dong Li , Edith C. H. Ngai , Emad Barsoum

Speculative Decoding is a widely used technique to speed up inference for Large Language Models (LLMs) without sacrificing quality. When performing inference, speculative decoding uses a smaller draft model to generate speculative tokens…

Machine Learning · Computer Science 2025-02-06 Minghao Yan , Saurabh Agarwal , Shivaram Venkataraman

Large language model (LLM) inference often suffers from high decoding latency and limited scalability across heterogeneous edge-cloud environments. Existing speculative decoding (SD) techniques accelerate token generation but remain…

Machine Learning · Computer Science 2025-12-02 Fengze Yu , Leshu Li , Brad McDanel , Sai Qian Zhang

Large Language Models (LLMs) have achieved remarkable success across many applications, with Mixture of Experts (MoE) models demonstrating great potential. Compared to traditional dense models, MoEs achieve better performance with less…

Machine Learning · Computer Science 2026-02-17 Zongle Huang , Lei Zhu , Zongyuan Zhan , Ting Hu , Weikai Mao , Xianzhi Yu , Yongpan Liu , Tianyu Zhang

The emergence of long-context large language models (LLMs) offers a promising alternative to traditional retrieval-augmented generation (RAG) for processing extensive documents. However, the computational overhead of long-context inference…

Computation and Language · Computer Science 2025-06-24 Guanzheng Chen , Qilong Feng , Jinjie Ni , Xin Li , Michael Qizhe Shieh