LangChain

LangGraph

LangChain's graph framework for agents. Models come from LangChain, so it is one base_url.

Step by step

Install

pip install langgraph langchain-openai

Build the model

ChatOpenAI(model, base_url, api_key) below.

Wire the graph

Pass the model to your nodes.

Protocol

OpenAI Chat Completions

Configured in

ChatOpenAI base_url

Base URL

https://api.luxechain.si/v1

Copy this

langgraph

from langchain_openai import ChatOpenAI

model = ChatOpenAI(
    model="YOUR_MODEL_ID",                 # any model id from the /models page
    base_url="https://api.luxechain.si/v1",
    api_key="lxc_live_YOUR_KEY",
)

The keyword is base_url (alias openai_api_base). LangGraph itself has no model layer.

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