{
  "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "project_name": "my-rag-chatbot",
  "project_id": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
  "name": "user_query_trace",
  "start_time": "2026-06-13T10:00:00.000Z",
  "end_time": "2026-06-13T10:00:02.543Z",
  "input": {
    "messages": [
      {
        "role": "user",
        "content": "What are the main features of Opik?"
      }
    ]
  },
  "output": {
    "message": {
      "role": "assistant",
      "content": "Opik is an open-source LLM evaluation and tracing platform that provides: 1) Trace logging for debugging LLM applications, 2) Automated evaluation with LLM-as-a-judge metrics, 3) Dataset management for running experiments, and 4) Production monitoring with real-time scoring."
    }
  },
  "metadata": {
    "session_id": "session-abc-123",
    "user_id": "user-456",
    "environment": "production"
  },
  "tags": ["rag", "production", "chatbot"],
  "usage": {
    "prompt_tokens": 245,
    "completion_tokens": 87,
    "total_tokens": 332
  },
  "created_at": "2026-06-13T10:00:02.600Z",
  "last_updated_at": "2026-06-13T10:00:02.600Z",
  "created_by": "sdk",
  "feedback_scores": [
    {
      "name": "relevance",
      "value": 0.92,
      "reason": "The answer directly addresses the question with accurate information.",
      "source": "online_scoring"
    },
    {
      "name": "helpfulness",
      "value": 4.5,
      "reason": "Clear and informative response",
      "source": "ui"
    }
  ],
  "span_feedback_scores": [
    {
      "name": "hallucination",
      "value": 0.05,
      "source": "online_scoring"
    }
  ],
  "total_estimated_cost": 0.000664,
  "duration": 2543
}