Open Source · language

Use DeepSeek V3 with JavaScript

Updated 2026-05-21 · By XALEN

How to use DeepSeek V3 (Open Source, 671B (37B active)) with JavaScript. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

DeepSeek V3

671B (37B active) · 128K context · $0.05 input

Framework

JavaScript

language · npm install xalen-sdk

1. Install

npm install xalen-sdk

2. Code

import XALEN from 'xalen-sdk';

const client = new XALEN({ apiKey: 'xln_test_YOUR_KEY' });

const response = await client.chat.completions.create({
  model: 'deepseek-v3',
  messages: [{ role: 'user', content: 'Hello from JavaScript!' }]
});
console.log(response.choices[0].message.content);

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Last updated: 2026-05-21