{
  "model": "openai/gpt-4-turbo", // Or a Fusion-specific alias, or a list for orchestration
  "messages": [
    {"role": "system", "content": "You are a helpful assistant."},
    {"role": "user", "content": "What is the capital of France?"}
  ],
  "max_tokens": 150,
  "temperature": 0.7,
  "top_p": 1.0,
  "stream": false,
  "frequency_penalty": 0.0,
  "presence_penalty": 0.0,
  "stop": ["\n"]
}