Compact · mobile

Use GPT-4.1 Nano with Flutter

Updated 2026-05-21 · By XALEN

How to use GPT-4.1 Nano (Compact, ~8B) with Flutter. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

GPT-4.1 Nano

~8B · 128K context · $0.008 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': 'gpt-4-1-nano',
      '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