Uploaded December 2025 | Updated September 2026, 2 weeks ago

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LangChain is an open source framework with a pre-built agent architecture and integrations for any model or tool — so you can build agents that adapt as fast as the ecosystem evolves

LangChain is the easiest way to start building agents and applications powered by LLMs. With under 10 lines of code, you can connect to OpenAI, Anthropic, Google, and more. LangChain provides a pre-built agent architecture and model integrations to help you get started quickly and seamlessly incorporate LLMs into your agents and applications.

github: github.com/krishnaik06/Langchain-V1-Crash-Course

TimeStamp:
00:00:00 Introduction
00:01:14 Langchain updates
00:05:06 Virtual Environment using UV
00:16:40 Agents QWith Langchain
00:35:37 Langchain Model Integration
00:47:46 Streaming And Batch
00:55:22 Tools In Langchain
01:04:36 Messages Types In Langchain
01:20:51 Pydantic structured Output
01:37:17 Typedict Structured Output
01:43:16 Data Class Structured Output
01:49:56 Middleware Summarization
02:17:37 Human in the loop Middleware
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