Open Source · framework

Use Llama 3.1 405B with LlamaIndex

Updated 2026-05-21 · By XALEN

How to use Llama 3.1 405B (Open Source, 405B) with LlamaIndex. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

Llama 3.1 405B

405B · 128K context · $0.08 input

Framework

LlamaIndex

framework · pip install llama-index-llms-openai-like

1. Install

pip install llama-index-llms-openai-like

2. Code

from llama_index.llms.openai_like import OpenAILike

llm = OpenAILike(
    model="llama-3-1-405b",
    api_key="xln_test_YOUR_KEY",
    api_base="https://api.xalen.io/v1"
)

response = llm.complete("Explain Llama 3.1 405B")
print(response.text)

Llama 3.1 405B with Other Frameworks

Python JavaScript React Next.js Flask FastAPI Django Express.js

Other Models with LlamaIndex

Vedika Standard Vedika Fast Vedika Pro Ultra Vedika Vision Vedika Code Vedika Astro Agent

200+ models. One API. Works with any framework.

Get API Key

Last updated: 2026-05-21