How to Use LangChain
Step-by-step advanced-level guide covering 5 essential steps for how to use langchain. Includes tips for langchain and llamaindex and common troubleshooting solutions.
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In This Guide
Install LangChain
Pip install langchain-openai This step covers install langchain, an essential part of the how to use langchain process.
Create LLM connection
Initialize ChatOpenAI or other model. This step covers create llm connection, an essential part of the how to use langchain process.
Build chains
Connect prompts, LLMs, and tools. This step covers build chains, an essential part of the how to use langchain process.
Add retrieval
Integrate vector stores for RAG. This step covers add retrieval, an essential part of the how to use langchain process.
Build agents
Create autonomous tool-using agents. This step covers build agents, an essential part of the how to use langchain process.
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Pro Tips
- Start with simple chains
- Use LCEL for composition
- LangSmith for debugging
- Many integrations available
Tools Mentioned in This Guide
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