[KongchangAI]
Partially Verified70% confidenceFactExact time

Before LCEL, LangChain's chain invocations relied on explicit Chain classes such as LLMChain and SequentialChain

4
Sources
70%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026

Sources

Complete Guide to LangChain 0.3: Module Architecture & Core Development in Practice
bilibili吴恩达langchain6/13/2026

Related Claims

UnverifiedLangChain支持顺序链（Sequential Chain）和路由链（Router Chain）等多种链类型74% similarVerifiedLangChain的核心抽象是Chain（链），即将多个处理步骤串联成线性流水线71% similarUnverified早期LangChain采用链式（Chain）架构，本质是线性管道，难以表达复杂条件逻辑和回路70% similarVerifiedLangChain Expression Language（LCEL）简化了复杂调用链的构建69% similar

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