Open Source · frontend

Use InternLM 2.5 20B with Next.js

Updated 2026-05-21 · By XALEN

How to use InternLM 2.5 20B (Open Source, 20B) with Next.js. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

InternLM 2.5 20B

20B · 256K context · $0.02 input

Framework

Next.js

frontend · npm install xalen-sdk

1. Install

npm install xalen-sdk

2. Code

// app/api/chat/route.ts
import XALEN from 'xalen-sdk';

const client = new XALEN({ apiKey: process.env.XALEN_API_KEY });

export async function POST(req: Request) {
  const { messages } = await req.json();
  const response = await client.chat.completions.create({
    model: 'internlm-2-5-20b',
    messages,
    stream: true
  });
  return new Response(response.toReadableStream());
}

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Last updated: 2026-05-21