SynapseRoute: An Auto-Route Switching Framework on Dual-State Large Language Model

Fuente: arXiv
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Autori principali: Zhang, Wencheng, Qiao, Shiqin, Luo, Lingjie, Li, Yinfeng, Zheng, Chuanyang, Xu, Qian, Li, Meng, Gui, Yong, He, Yijun, Qiu, Jianing, Hong, Jindong, Sun, Jiankai
Natura: Preprint
Pubblicazione: 2025
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author Zhang, Wencheng
Qiao, Shiqin
Luo, Lingjie
Li, Yinfeng
Zheng, Chuanyang
Xu, Qian
Li, Meng
Gui, Yong
He, Yijun
Qiu, Jianing
Hong, Jindong
Sun, Jiankai
author_facet Zhang, Wencheng
Qiao, Shiqin
Luo, Lingjie
Li, Yinfeng
Zheng, Chuanyang
Xu, Qian
Li, Meng
Gui, Yong
He, Yijun
Qiu, Jianing
Hong, Jindong
Sun, Jiankai
contents With the widespread adoption of large language models (LLMs) in practical applications, selecting an appropriate model requires balancing not only performance but also operational cost. The emergence of reasoning-capable models has further widened the cost gap between "thinking" (high reasoning) and "non-thinking" (fast, low-cost) modes. In this work, we reveal that approximately 58% of medical questions can be accurately answered by the non-thinking mode alone, without requiring the high-cost reasoning process. This highlights a clear dichotomy in problem complexity and suggests that dynamically routing queries to the appropriate mode based on complexity could optimize accuracy, cost-efficiency, and overall user experience. Based on this, we further propose SynapseRoute, a machine learning-based dynamic routing framework that intelligently assigns input queries to either thinking or non-thinking modes. Experimental results on several medical datasets demonstrate that SynapseRoute not only improves overall accuracy (0.8390 vs. 0.8272) compared to the thinking mode alone but also reduces inference time by 36.8% and token consumption by 39.66%. Importantly, qualitative analysis indicates that over-reasoning on simpler queries can lead to unnecessary delays and even decreased accuracy, a pitfall avoided by our adaptive routing. Finally, this work further introduces the Accuracy-Inference-Token (AIT) index to comprehensively evaluate the trade-offs among accuracy, latency, and token cost.
format Preprint
id arxiv_https___arxiv_org_abs_2507_02822
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle SynapseRoute: An Auto-Route Switching Framework on Dual-State Large Language Model
Zhang, Wencheng
Qiao, Shiqin
Luo, Lingjie
Li, Yinfeng
Zheng, Chuanyang
Xu, Qian
Li, Meng
Gui, Yong
He, Yijun
Qiu, Jianing
Hong, Jindong
Sun, Jiankai
Computation and Language
Artificial Intelligence
Machine Learning
With the widespread adoption of large language models (LLMs) in practical applications, selecting an appropriate model requires balancing not only performance but also operational cost. The emergence of reasoning-capable models has further widened the cost gap between "thinking" (high reasoning) and "non-thinking" (fast, low-cost) modes. In this work, we reveal that approximately 58% of medical questions can be accurately answered by the non-thinking mode alone, without requiring the high-cost reasoning process. This highlights a clear dichotomy in problem complexity and suggests that dynamically routing queries to the appropriate mode based on complexity could optimize accuracy, cost-efficiency, and overall user experience. Based on this, we further propose SynapseRoute, a machine learning-based dynamic routing framework that intelligently assigns input queries to either thinking or non-thinking modes. Experimental results on several medical datasets demonstrate that SynapseRoute not only improves overall accuracy (0.8390 vs. 0.8272) compared to the thinking mode alone but also reduces inference time by 36.8% and token consumption by 39.66%. Importantly, qualitative analysis indicates that over-reasoning on simpler queries can lead to unnecessary delays and even decreased accuracy, a pitfall avoided by our adaptive routing. Finally, this work further introduces the Accuracy-Inference-Token (AIT) index to comprehensively evaluate the trade-offs among accuracy, latency, and token cost.
title SynapseRoute: An Auto-Route Switching Framework on Dual-State Large Language Model
topic Computation and Language
Artificial Intelligence
Machine Learning
url https://arxiv.org/abs/2507.02822