Vision · framework

Use Qwen 2.5 VL 72B with LangChain

Updated 2026-05-21 · By XALEN

How to use Qwen 2.5 VL 72B (Vision, 72B) with LangChain. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

Qwen 2.5 VL 72B

72B · 128K context · $0.05 input

Framework

LangChain

framework · pip install langchain-openai

1. Install

pip install langchain-openai

2. Code

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="qwen-2-5-vl-72b",
    openai_api_key="xln_test_YOUR_KEY",
    openai_api_base="https://api.xalen.io/v1"
)

response = llm.invoke("What is Qwen 2.5 VL 72B?")
print(response.content)

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Last updated: 2026-05-21