LLM chat completions

{
  "model": "gpt-4.1-mini",
  "messages": [
    {
      "role": "user",
      "content": "Summarize the benefits of API observability in one sentence."
    }
  ],
  "max_tokens": 80
}

{
  "id": "chatcmpl_example",
  "choices": [
    {
      "message": {
        "role": "assistant",
        "content": "API observability helps teams track usage, latency, errors, and cost so they can improve reliability and routing decisions."
      }
    }
  ],
  "usage": {
    "prompt_tokens": 16,
    "completion_tokens": 18,
    "total_tokens": 34
  }
}