Open Source · mobile

Use InternLM 2.5 20B with Flutter

Updated 2026-05-21 · By XALEN

How to use InternLM 2.5 20B (Open Source, 20B) with Flutter. 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

Flutter

mobile · flutter pub add http

1. Install

flutter pub add http

2. Code

import 'dart:convert';
import 'package:http/http.dart' as http;

Future<String> chat(String question) async {
  final response = await http.post(
    Uri.parse('https://api.xalen.io/v1/chat/completions'),
    headers: {
      'Authorization': 'Bearer xln_test_YOUR_KEY',
      'Content-Type': 'application/json',
    },
    body: jsonEncode({
      'model': 'internlm-2-5-20b',
      'messages': [{'role': 'user', 'content': question}],
    }),
  );
  final data = jsonDecode(response.body);
  return data['choices'][0]['message']['content'];
}

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Last updated: 2026-05-21