January 2026
Intermediate
404 pages
7h 22m
Korean
Content preview from AI 에이전트 엔지니어링
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104
2
부
에이전트 시스템의 구축과 확장
4.1
랭체인 기초
도구 선택과 오케스트레이션을 더 깊이 다루기 전에 랭체인의 핵심 개념을 이해해 두면 좋습니
다. 랭체인의 중심에는 프롬프트를 처리하고 응답을 생성하는 파운데이션 모델을 감싼 채팅 모
델
chat
model
이 있습니다. 랭체인에서는
init
_
chat
_
model
()
에 모델 이름을 파라미터로 전달해
다양한 제공업체의
LLM
을 동일한 채팅 모델 인터페이스로 초기화할 수 있습니다. 오픈
AI
, 앤
트로픽, 아마존, 구글 등 다양한 제공업체의 모델을 사용할 수 있으며, 각 제공업체별로 대응되
는 랭체인 통합 패키지를 설치한 뒤
init
_
chat
_
model
()
로 초기화합니다.
1
from langchain.chat_models import init_chat_model
llm = init_chat_model(model="gpt-5-mini", temperature=0)
랭체인은 대화 컨텍스트를 유지하기 위해 상호작용을 메시지로 구조화합니다. 주요 메시지 유
형으로 사용자 입력을 나타내는
HumanMessage
와 모델의 응답을 나타내는
AIMessage
, 도구 호
출 결과를 표현하는
ToolMessage
가 있습니다.
from langchain_core.messages import HumanMessage
messages = [HumanMessage("오늘 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.