curl --request GET \
  --url https://api.perplexity.ai/v1/async/sonar/{api_request} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "model": "<string>",
  "created_at": 123,
  "started_at": 123,
  "completed_at": 123,
  "response": {
    "id": "<string>",
    "model": "<string>",
    "created": 123,
    "choices": [
      {
        "index": 123,
        "message": {
          "content": "<string>"
        },
        "delta": {
          "content": "<string>"
        }
      }
    ],
    "usage": {
      "prompt_tokens": 123,
      "completion_tokens": 123,
      "total_tokens": 123,
      "cost": {
        "input_tokens_cost": 123,
        "output_tokens_cost": 123,
        "total_cost": 123,
        "reasoning_tokens_cost": 123,
        "request_cost": 123,
        "citation_tokens_cost": 123,
        "search_queries_cost": 123
      },
      "search_context_size": "<string>",
      "citation_tokens": 123,
      "num_search_queries": 123,
      "reasoning_tokens": 123
    },
    "object": "chat.completion",
    "citations": [
      "<string>"
    ],
    "search_results": [
      {
        "title": "<string>",
        "url": "<string>",
        "date": "<string>",
        "last_updated": "<string>",
        "snippet": "",
        "source": "web"
      }
    ],
    "images": [
      {
        "image_url": "<string>",
        "origin_url": "<string>",
        "title": "<string>",
        "width": 123,
        "height": 123
      }
    ],
    "related_questions": [
      "<string>"
    ]
  },
  "failed_at": 123,
  "error_message": "<string>"
}