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TensorOpera Router: A Multi-Model Router for Efficient LLM Inference

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arxiv 2408.12320 v3 pith:3FNOVHN5 submitted 2024-08-22 cs.AI cs.LG

TensorOpera Router: A Multi-Model Router for Efficient LLM Inference

classification cs.AI cs.LG
keywords querymodelsexpertllmsroutersingleto-routervarious
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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With the rapid growth of Large Language Models (LLMs) across various domains, numerous new LLMs have emerged, each possessing domain-specific expertise. This proliferation has highlighted the need for quick, high-quality, and cost-effective LLM query response methods. Yet, no single LLM exists to efficiently balance this trilemma. Some models are powerful but extremely costly, while others are fast and inexpensive but qualitatively inferior. To address this challenge, we present TO-Router, a non-monolithic LLM querying system that seamlessly integrates various LLM experts into a single query interface and dynamically routes incoming queries to the most high-performant expert based on query's requirements. Through extensive experiments, we demonstrate that when compared to standalone expert models, TO-Router improves query efficiency by up to 40\%, and leads to significant cost reductions of up to 30%, while maintaining or enhancing model performance by up to 10%.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Switchcraft: AI Model Router for Agentic Tool Calling

    cs.AI 2026-05 unverdicted novelty 7.0

    Switchcraft routes agentic tool-calling queries to the lowest-cost model that preserves correctness, reaching 82.9% accuracy and 84% cost reduction on five benchmarks.

  2. Rethinking Predictive Modeling for LLM Routing: When Simple kNN Beats Complex Learned Routers

    cs.LG 2025-05 conditional novelty 7.0

    A well-tuned kNN router matches or exceeds state-of-the-art learned routers on new standardized benchmarks spanning instruction, QA, reasoning, and the first multi-modal visual routing dataset, due to locality of mode...

  3. SWE-Router: Routing in Multi-turn Agentic Software Engineering Tasks

    cs.SE 2026-06 unverdicted novelty 6.0

    SWE-Router introduces trajectory-conditioned value-based routing for LLM agents on SWE tasks, with a Bayes-optimality theorem and empirical cost savings while retaining most strong-model performance.

  4. CAMI: Cost-Aware Agent-Guided Multi-Indexing for Semantic Retrieval

    cs.IR 2026-06 unverdicted novelty 5.0

    CAMI frames multi-index construction for semantic retrieval as a budgeted multi-objective portfolio problem and uses agent-guided search plus confidence-aware pruning to find high-recall configurations with reduced ev...

  5. IR3DE: A Linear Router for Large Language Models

    cs.CL 2026-06 unverdicted novelty 5.0

    IR3DE is a ridge regression router for domain-expert LLMs that matches or exceeds baselines in language modeling and reasoning tasks while allowing dynamic expert addition or removal without retraining.

  6. Harnessing Multiple Large Language Models: A Survey on LLM Ensemble

    cs.CL 2025-02 unverdicted novelty 2.0

    A systematic survey of LLM ensemble methods organized into a taxonomy of ensemble-before-inference, ensemble-during-inference, and ensemble-after-inference stages, with review of benchmarks, applications, and future d...