k" },
        "targets": [{ // The primary target
          "provider": 'openai',
          "api_key": 'Your OpenAI API key',
        },{ // The fallback target
          "provider": 'anthropic',
          "api_key": 'Your Anthropic API key',
        }],
      };

      // 2. Use the config in completion requests
      await client.chat.completions.create({
        model: 'gpt-4o', // The model will be replaced with the one specified in the config
        messages: [{ role: 'user', content: 'Hello, world!' 