将搜索与推理解耦：面向LLM Agent的供应商无关的接地架构
Decoupling Search from Reasoning: A Vendor-Agnostic Grounding Architecture for LLM Agents
AI总结：
提出解耦搜索接地（DSG）架构，将搜索接地从推理模型中分离，通过MCP兼容网关实现供应商路由、缓存等控制，在降低成本和延迟的同时保持或提升准确性。
摘要：
生产级LLM Agent越来越依赖实时搜索，但原生搜索接地将检索策略、供应商选择、证据注入、成本、延迟和生成行为捆绑在单一模型-供应商边界内。这种耦合使得接地难以检查、调优、重用或移植，并可能触发搜索诱导的冗长，破坏严格的输出合约。我们提出解耦搜索接地（DSG），一种供应商无关的边界，通过MCP兼容网关将接地移出推理模型，将供应商路由、源感知上下文渲染、配置的回退、检索深度控制以及精确和语义缓存作为一级控制暴露。在SimpleQA、FreshQA和HotpotQA上的五个前沿模型上，原生搜索在时效性敏感的FreshQA上领先，但DSG在控制重要时展现出更强的前沿：在SimpleQA上，它以91%更低的搜索成本接近原生准确率（86.1%对87.7%），保持简洁答案合约，并以68%更低的延迟达到99.4%的热缓存命中率。作为大规模Agent工作负载的共享生产接地层部署，DSG在电商查询理解（QIU）工作负载上匹配或略超原生搜索准确率，同时将搜索成本降低超过98%。实时接地最好被视为可优化的接口边界，而非固定的模型特性。
英文摘要：
Production LLM agents increasingly depend on real-time search, yet native search grounding bundles retrieval policy, provider choice, evidence injection, cost, latency, and generation behavior behind a single model-provider boundary. This coupling makes grounding hard to inspect, tune, reuse, or port, and can trigger Search-Induced Verbosity that breaks strict output contracts. We present Decoupled Search Grounding (DSG), a vendor-agnostic boundary that moves grounding outside the reasoning model through an MCP-compatible gateway, exposing provider routing, source-aware context rendering, configured fallback, retrieval-depth control, and exact plus semantic caching as first-class controls. Across five frontier models on SimpleQA, FreshQA, and HotpotQA, native search leads on recency-sensitive FreshQA, but DSG exposes a stronger frontier when control matters: on SimpleQA it nearly matches native accuracy (86.1% vs. 87.7%) at 91% lower search cost, preserves concise answer contracts, and reaches a 99.4% warm-cache hit rate with 68% lower latency. Deployed as a shared production grounding layer for large-scale agentic workloads with interchangeable models, DSG matches or slightly exceeds native-search accuracy on an e-commerce query-understanding (QIU) workload while cutting search cost by over 98%. Real-time grounding is best treated as an optimizable interface boundary, not a fixed model feature.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
