A programming language used to write documentation for LangChain
B.
A legacy method for creating chains in LangChain
C.
A declarative way to compose chains together using LangChain Expression Language
D.
An older Python library for building Large Language Models
The Answer Is:
C
This question includes an explanation.
Explanation:
Comprehensive and Detailed In-Depth Explanation:
LCEL (LangChain Expression Language) is a declarative syntax in LangChain for composing chains—sequences of operations involving LLMs, tools, and memory. It simplifies chain creation with a readable, modular approach, making Option C correct. Option A is false, as LCEL isn’t fordocumentation. Option B is incorrect, as LCEL is current, not legacy. Option D is wrong, as LCEL is part of LangChain, not a standalone LLM library. LCEL enhances flexibility in application design.
OCI 2025 Generative AI documentation likely mentions LCEL under LangChain integration or chain composition.
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