Dart & Flutter SDK

dart pub add nrouter
# Flutter applications:
flutter pub add nrouter

export NROUTER_API_KEY="sk-nrouter-xxxxxxxxxxxx"

import 'package:nrouter/nrouter.dart';

Future<void> main() async {
  const apiKey = String.fromEnvironment(
    'NROUTER_API_KEY',
    defaultValue: 'sk-nrouter-xxxxxxxxxxxx',
  );
  final client = NRouter(
    apiKey: apiKey,
    baseUrl: 'https://api.nrouter.ai/v1',
  );

  final result = await client.chatCompletions({
    'model': 'gpt-5.4-mini',
    'messages': [{'role': 'user', 'content': 'Hello, nRouter!'}],
  });

  print(result.body['choices'][0]['message']['content']);
  if (result.meta.isPriced) {
    print('Cost: \$${result.meta.cost} | ID: ${result.meta.requestId}');
  }
  client.close();
}

final stream = client.messagesStream({
  'model': 'claude-haiku-4-5-20251001',
  'max_tokens': 256,
  'messages': [{'role': 'user', 'content': 'Write a haiku.'}],
});

await for (final chunk in stream) {
  print(chunk.delta);
}