curl --request GET \
  --url https://api.sailresearch.com/v1/batches/{batch_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "batch_abc123",
  "request_counts": 2,
  "created_at": 1741564800,
  "label": "my-batch-job",
  "request_status": {
    "my-first-request": {
      "status": "COMPLETED"
    },
    "my-second-request": {
      "status": "RUNNING"
    }
  }
}