Open Source · mobile

Use DeepSeek V3 with Flutter

Updated 2026-05-21 · By XALEN

How to use DeepSeek V3 (Open Source, 671B (37B active)) with Flutter. 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

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': 'deepseek-v3',
      '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