Unverified50% confidenceFactExact time
LCEL是LangChain在2023年下半年引入的声明式编排语法，通过管道操作符将统一为Runnable接口的组件串联
1
Sources
50%
Confidence
Long-term
Relevance
8/26/2026
First Seen
Sources
LangChain集成MCP实战：从概念到多工具AI应用搭建
Related Entities
Related Claims
UnverifiedLCEL于2023年底正式成为LangChain官方推荐的链构建方式80% similarVerifiedIn 2023, LangChain introduced LangChain Expression Language (LCEL), which adopts a declarative chaining syntax.78% similarUnverified模型路由概念在2023-2024年快速成熟，催生了LiteLLM、PortKey、OpenRouter等LLM网关产品58% similarUnverifiedBetween 2023 and 2024, LangChain underwent major version restructuring from 0.1 to 0.2 and then to 0.3, introducing LCEL declarative syntax.57% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/802079API
curl https://kongchang.com/api/v1/knowledge/claims/802079MCP
get_claim(id=802079)