Open Source · framework

Use NVIDIA Nemotron 70B with LangChain

Updated 2026-05-21 · By XALEN

How to use NVIDIA Nemotron 70B (Open Source, 70B) with LangChain. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

NVIDIA Nemotron 70B

70B · 128K context · $0.04 input

Framework

LangChain

framework · pip install langchain-openai

1. Install

pip install langchain-openai

2. Code

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="nvidia-llama-3-1-nemotron-70b",
    openai_api_key="xln_test_YOUR_KEY",
    openai_api_base="https://api.xalen.io/v1"
)

response = llm.invoke("What is NVIDIA Nemotron 70B?")
print(response.content)

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Last updated: 2026-05-21