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templates/openai-setup.ts

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+// OpenAI provider configuration
+// AI SDK Core - OpenAI setup and usage
+
+import { generateText } from 'ai';
+import { openai } from '@ai-sdk/openai';
+
+async function main() {
+  console.log('=== OpenAI Provider Setup ===\n');
+
+  // Method 1: Use environment variable (recommended)
+  // OPENAI_API_KEY=sk-...
+  const model1 = openai('gpt-4-turbo');
+
+  // Method 2: Explicit API key
+  const model2 = openai('gpt-4', {
+    apiKey: process.env.OPENAI_API_KEY,
+  });
+
+  // Available models (latest)
+  const models = {
+    gpt51: openai('gpt-5.1'),            // Latest flagship model (Nov 2025)
+    gpt5Pro: openai('gpt-5-pro'),        // Advanced reasoning
+    gpt41: openai('gpt-4.1'),            // Latest GPT-4 series
+    o3: openai('o3'),                    // Reasoning model
+    gpt4Turbo: openai('gpt-4-turbo'),    // Previous generation (still excellent)
+    gpt35Turbo: openai('gpt-3.5-turbo'), // Fast, cost-effective
+  };
+
+  // Older models (still functional)
+  // const olderModels = {
+  //   gpt5: openai('gpt-5'),      // Superseded by gpt-5.1
+  //   gpt4: openai('gpt-4'),      // Use gpt-4-turbo instead
+  // };
+
+  // Example: Generate text with GPT-4
+  console.log('Generating text with GPT-4 Turbo...\n');
+
+  const result = await generateText({
+    model: models.gpt4Turbo,
+    prompt: 'Explain the difference between GPT-3.5 and GPT-4 in one sentence.',
+    maxOutputTokens: 100,
+  });
+
+  console.log('Response:', result.text);
+  console.log('\nUsage:');
+  console.log('- Prompt tokens:', result.usage.promptTokens);
+  console.log('- Completion tokens:', result.usage.completionTokens);
+  console.log('- Total tokens:', result.usage.totalTokens);
+
+  // Example: Error handling
+  console.log('\n=== Error Handling ===\n');
+
+  try {
+    const result2 = await generateText({
+      model: openai('gpt-4-turbo'),
+      prompt: 'Hello',
+    });
+    console.log('Success:', result2.text);
+  } catch (error: any) {
+    if (error.statusCode === 401) {
+      console.error('Error: Invalid API key');
+    } else if (error.statusCode === 429) {
+      console.error('Error: Rate limit exceeded');
+    } else if (error.statusCode >= 500) {
+      console.error('Error: OpenAI server issue');
+    } else {
+      console.error('Error:', error.message);
+    }
+  }
+
+  // Model selection guide
+  console.log('\n=== Model Selection Guide ===');
+  console.log('- gpt-5.1: Latest flagship model (November 2025)');
+  console.log('- gpt-5-pro: Advanced reasoning and complex tasks');
+  console.log('- o3: Specialized reasoning model');
+  console.log('- gpt-4.1: Latest GPT-4 series, excellent quality');
+  console.log('- gpt-4-turbo: Previous generation, still very capable');
+  console.log('- gpt-3.5-turbo: Fast and cost-effective for simple tasks');
+}
+
+main().catch(console.error);