Compact · backend
Use Phi-3.5 Mini with Express.js
Updated 2026-05-21 · By XALEN
How to use Phi-3.5 Mini (Compact, 3.8B) with Express.js. Install, authenticate, and make your first API call in minutes. Working code example included.
Model
Phi-3.5 Mini
3.8B · 128K context · $0.005 input
Framework
Express.js
backend · npm install xalen-sdk express
1. Install
npm install xalen-sdk express
2. Code
const express = require('express');
const XALEN = require('xalen-sdk');
const app = express();
app.use(express.json());
const client = new XALEN({ apiKey: 'xln_test_YOUR_KEY' });
app.post('/chat', async (req, res) => {
const response = await client.chat.completions.create({
model: 'phi-3-5-mini',
messages: req.body.messages
});
res.json({ reply: response.choices[0].message.content });
});
app.listen(3000);
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Get API KeyLast updated: 2026-05-21