{
  "benchmark": "Online-Mind2Web",
  "timestamp": "20260422_015724",
  "api_endpoint": "http://localhost:8088/api/browser/tasks",
  "total_tasks": 0,
  "completed": 0,
  "failed": 0,
  "success_rate": 0.0,
  "avg_time_sec": null,
  "median_time_sec": null,
  "tasks_per_hour": null
}