Answer a question | EmpirioLabs AI Docs

curl -X POST https://api.empiriolabs.ai/v1/answer \
     -H "Authorization: Bearer <token>" \
     -H "Content-Type: application/json" \
     -d '{
  "model": "exa-answer",
  "query": "When was the last total solar eclipse visible from the US mainland?"
}'

{
  "answer": "The last total solar eclipse visible from the US mainland occurred on August 21, 2017. It was a widely observed event, often referred to as the 'Great American Eclipse,' with the path of totality spn-",
  "citations": [
    {
      "title": "Total Solar Eclipse of August 21, 2017",
      "url": "https://eclipse2017.nasa.gov/",
      "snippet": "NASA's official page for the 2017 total solar eclipse, providing detailed information about the event, viewing locations, and scientific observations."
    }
  ],
  "usage": {
    "prompt_tokens": 25,
    "completion_tokens": 75,
    "total_tokens": 100
  }
}

Single-call grounded answer endpoint. Currently powers Exa Answer and similar models that return a synthesized answer with inline citations in one round-trip (no streaming, no separate fetch / crawl steps). For multi-step research use /v1/research; for raw retrieval use /v1/search.

Authentication

AuthorizationBearer

Pass your EmpirioLabs API key as a bearer token. The Anthropic-style x-api-key header is also accepted on every endpoint.

Request

This endpoint expects an object.

modelstringRequired

querystringRequired

streambooleanOptionalDefaults to false

Stream the answer text as it’s generated (SSE).

Response

Synthesized answer with citations.

answerstringOptional

citationslist of objectsOptional

usageobjectOptional