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Related papers: Universal Model Routing for Efficient LLM Inferenc…

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Large Language Models (LLMs) exhibit potential artificial generic intelligence recently, however, their usage is costly with high response latency. Given mixed LLMs with their own strengths and weaknesses, LLM routing aims to identify the…

Computation and Language · Computer Science 2025-02-27 Xinyuan Wang , Yanchi Liu , Wei Cheng , Xujiang Zhao , Zhengzhang Chen , Wenchao Yu , Yanjie Fu , Haifeng Chen

Recently, the number of off-the-shelf Large Language Models (LLMs) has exploded with many open-source options. This creates a diverse landscape regarding both serving options (e.g., inference on local hardware vs remote LLM APIs) and model…

Machine Learning · Computer Science 2024-12-18 Dimitrios Sikeridis , Dennis Ramdass , Pranay Pareek

Increasing demand for Large Language Models (LLMs) services imposes substantial deployment and computation costs on providers. LLM routing offers a cost-efficient solution by directing queries to the optimal LLM based on model and query…

Databases · Computer Science 2025-12-16 Fangzhou Wu , Sandeep Silwal

Large language models (LLMs) excel in most NLP tasks but also require expensive cloud servers for deployment due to their size, while smaller models that can be deployed on lower cost (e.g., edge) devices, tend to lag behind in terms of…

Multimodal large language models (MLLMs) have heterogeneous strengths across OCR, chart understanding, spatial reasoning, visual question answering, cost, and latency. Effective MLLM routing therefore requires more than estimating query…

Artificial Intelligence · Computer Science 2026-05-13 Xueqi Cheng , Yushun Dong

The rapid growth of large language models (LLMs) with diverse capabilities, latency and computational costs presents a critical deployment challenge: selecting the most suitable model for each prompt to optimize the trade-off between…

Computation and Language · Computer Science 2025-10-03 Shubham Agrawal , Prasang Gupta

LLM routing aims to achieve a favorable quality--cost trade-off by dynamically assigning easy queries to smaller models and harder queries to stronger ones. However, across both unimodal and multimodal settings, we uncover a pervasive yet…

Artificial Intelligence · Computer Science 2026-02-04 Guannan Lai , Han-Jia Ye

Deploying large language models (LLMs) in real-world applications requires robust safety guard models to detect and block harmful user prompts. While large safety guard models achieve strong performance, their computational cost is…

Computation and Language · Computer Science 2025-05-23 Seanie Lee , Dong Bok Lee , Dominik Wagner , Minki Kang , Haebin Seong , Tobias Bocklet , Juho Lee , Sung Ju Hwang

There is a rapidly growing number of open-source Large Language Models (LLMs) and benchmark datasets to compare them. While some models dominate these benchmarks, no single model typically achieves the best accuracy in all tasks and use…

Computation and Language · Computer Science 2023-09-28 Tal Shnitzer , Anthony Ou , Mírian Silva , Kate Soule , Yuekai Sun , Justin Solomon , Neil Thompson , Mikhail Yurochkin

With the rapid growth in the number of Large Language Models (LLMs), there has been a recent interest in LLM routing, or directing queries to the cheapest LLM that can deliver a suitable response. We conduct a minimax analysis of the…

Reasoning language models perform well on complex tasks but are costly to deploy due to their size and long reasoning traces. We propose a routing approach that assigns each problem to the smallest model likely to solve it, reducing compute…

Machine Learning · Computer Science 2025-11-07 Bo Zhao , Berkcan Kapusuzoglu , Kartik Balasubramaniam , Sambit Sahu , Supriyo Chakraborty , Genta Indra Winata

While reasoning-augmented large language models (RLLMs) significantly enhance complex task performance through extended reasoning chains, they inevitably introduce substantial unnecessary token consumption, particularly for simpler problems…

Computation and Language · Computer Science 2025-05-28 Yang He , Xiao Ding , Bibo Cai , Yufei Zhang , Kai Xiong , Zhouhao Sun , Bing Qin , Ting Liu

Large Language Models (LLMs) present a critical trade-off between inference quality and computational cost: larger models offer superior capabilities but incur significant latency, while smaller models are faster but less powerful. Existing…

Machine Learning · Computer Science 2025-05-13 Hang Wu , Jianian Zhu , Yinghui Li , Haojie Wang , Biao Hou , Jidong Zhai

Large Language Model (LLM) serving systems must balance task performance against monetary cost. Two prominent optimization techniques have emerged independently: LLM routing, which directs each query to the most cost-effective model in a…

Databases · Computer Science 2026-05-28 Haotian Xu , Kangfei Zhao , Jiadong Xie

Large language models (LLMs) are increasingly deployed and democratized on edge devices. To improve the efficiency of on-device deployment, small language models (SLMs) are often adopted due to their efficient decoding latency and reduced…

Computation and Language · Computer Science 2025-02-10 Yu-Neng Chuang , Leisheng Yu , Guanchu Wang , Lizhe Zhang , Zirui Liu , Xuanting Cai , Yang Sui , Vladimir Braverman , Xia Hu

This study investigates the use of NeuralUCB for cost-aware large language model (LLM) routing. Existing routing approaches can be broadly grouped into supervised routing methods and partial-feedback methods, each with different tradeoffs…

Machine Learning · Computer Science 2026-04-01 Ming-Hua Tsai , Phat Tran

The proliferation of Large Language Models (LLMs) with varying capabilities and costs has created a need for efficient model selection in AI systems. LLM routers address this need by dynamically choosing the most suitable model for a given…

Machine Learning · Computer Science 2024-10-30 Zesen Zhao , Shuowei Jin , Z. Morley Mao

With the widespread deployment of large language models (LLMs) such as GPT4, BART, and LLaMA, the need for a system that can intelligently select the most suitable model for specific tasks while balancing cost, latency, accuracy, and…

Machine Learning · Computer Science 2025-02-25 Deepak Babu Piskala , Vijay Raajaa , Sachin Mishra , Bruno Bozza

Deploying large language models (LLMs) in edge-cloud environments requires an efficient routing strategy to balance cost and response quality. Traditional approaches prioritize either human-preference data or accuracy metrics from benchmark…

Networking and Internet Architecture · Computer Science 2025-02-18 Tuo Zhang , Asal Mehradfar , Dimitrios Dimitriadis , Salman Avestimehr

Efficiently routing queries to the optimal large language model (LLM) is crucial for optimizing the cost-performance trade-off in multi-model systems. However, most existing routers rely on single-model selection, making them susceptible to…

Machine Learning · Computer Science 2026-03-10 Sai Hao , Hao Zeng , Hongxin Wei , Bingyi Jing