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---
title: "LLMs、RAG、AI Agent三个到底什么区别"
type: source
tags: [llm, rag, ai-agent]
date: 2025-11-19
---
## Source File
- [[raw/AI/LLMs、RAG、AI Agent 三个到底什么区别?.md]]
## Summary
- 核心主题LLM、RAG、AI Agent三者区别
- 问题域AI应用开发初学者容易混淆这三个概念
- 方法/机制分层定位LLM思考、RAG认知、Agent执行
- 结论/价值:三者不是竞争技术,而是在不同层面满足不同场景的能力展示
## Key Claims
- LLM是"天才大脑",擅长思考但对当前情况一无所知
- RAG是"随身图书馆助理",提供实时信息消除幻觉
- AI Agent是智能体围绕LLM构建循环控制系统能感知、规划、执行、反思
- 未来架构设计在于将三者结合LLM推理、RAG准确性、Agent自主性
## Key Concepts
- [[LLM]]大语言模型AI应用的"天才大脑"
- [[RAG]]检索增强生成AI的"随身图书馆助理"
- [[AI Agent]]:智能体,具备感知-规划-执行-反思的循环控制
- [[幻觉]]LLM生成错误信息的问题
## Key Entities
## Connections
- [[LLM]] ← provides ← [[思考能力]]
- [[RAG]] ← extends ← [[LLM]]
- [[AI Agent]] ← uses ← [[LLM]]
- [[AI Agent]] ← uses ← [[RAG]]
## Contradictions