理解人工智能代理与 LLM
探索什么是人工智能代理、它们与传统软件有何不同，以及大型语言模型在其运行中的作用。
理解人工智能代理与 LLM 是 CoddyKit 上的免费 AI Agents with LangChain & Autonomous Workflows 课时。 这是第 1 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 AI Agents with LangChain & Autonomous Workflows 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 AI Agents with LangChain & Autonomous Workflows 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Welcome to AI Agents!
Welcome! You're about to meet AI agents — how they differ from ordinary software, and the LLMs that power their reasoning.
What Exactly is an AI Agent?
An AI agent is a smart assistant that perceives, reasons, acts, and learns toward a goal. Unlike a rigid script, it adapts as the situation changes.
Agents vs. Traditional Software
A calculator follows fixed rules: input, rule, output. An AI agent asked to find the best flight to Paris will search, compare, and decide along the way.
The Powerhouse: Large Language Models (LLMs)
At the core of most agents sits a Large Language Model (LLM) — trained on huge text corpora to understand language and generate it: answering, summarizing, translating, creating.
How LLMs 'Think' (Simply)
An LLM is a super-smart predictor: given a prompt, it picks the most probable next word, then the next, guided by patterns from billions of training examples.
def simple_llm_response(prompt):
if "hello" in prompt.lower():
return "Hello! How can I assist you?"
elif "weather" in prompt.lower():
return "I can't check the weather, but I can chat about other things!"
else:
return "That's an interesting thought!"
if __name__ == "__main__":
print(simple_llm_response("Say hello to me."))
print(simple_llm_response("What's the weather like?"))LLMs as the Agent's Brain
Inside an agent, the LLM is the reasoning engine. It interprets the goal, breaks tasks into steps, picks which tools to use, and shapes the response.
Key Agent Capabilities with LLMs
Pairing LLMs with other parts unlocks real power: remembering context, planning dynamically, calling external tools, and solving open-ended problems.
Real-World Agent Examples
You'll find agents in customer support (search a knowledge base, file a ticket), personal assistants (book, manage email), and data analysis (query, code, explain).
Agent vs. Chatbot: A Quick Distinction
All agents can chat, but not all chatbots are agents. An agent adds autonomy — it reasons about a goal and takes real actions, not just scripted replies.
Quick Check: Agent or Not?
Based on what we've learned, which of the following best describes a key characteristic that distinguishes an AI agent from a traditional software program?
Recap: Agents & LLMs
Recap: AI agents perceive, reason, and act, adapting where rule-based software can't. The LLM is the brain that lets them understand, plan, and decide. Up next: LangChain.
常见问题解答
「理解人工智能代理与 LLM」课时是免费的吗？
是的 — 「理解人工智能代理与 LLM」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 AI Agents with LangChain & Autonomous Workflows 课程的其余内容，请升级到 CoddyKit PRO。 AI Agents with LangChain & Autonomous Workflows 课程共包含 4 节课。
「理解人工智能代理与 LLM」这节课中我会学到什么？
探索什么是人工智能代理、它们与传统软件有何不同，以及大型语言模型在其运行中的作用。 你通过在浏览器中直接运行的动手代码来练习 AI Agents with LangChain & Autonomous Workflows，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 AI Agents with LangChain & Autonomous Workflows 需要有经验吗？
无需任何先前经验。CoddyKit 上的 AI Agents with LangChain & Autonomous Workflows 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 1 节课，共 4 节。
「理解人工智能代理与 LLM」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 AI Agents with LangChain & Autonomous Workflows 课中编写并运行代码吗？
能。每节 AI Agents with LangChain & Autonomous Workflows 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。
此课程中的所有课时
- 理解人工智能代理与 LLM
- LangChain 核心组件详解
- 构建您的第一个简单智能体
- 为代理添加记忆与对话状态