Open Source · language

Use Llama 3.1 405B with cURL

Updated 2026-05-21 · By XALEN

How to use Llama 3.1 405B (Open Source, 405B) with cURL. 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
cURL
language · No installation needed

1. Install

No installation needed

2. Code

curl https://api.xalen.io/v1/chat/completions \
  -H "Authorization: Bearer xln_test_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "llama-3-1-405b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

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Last updated: 2026-05-21