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Merit-only ranking · 4 providers · one corpus

Best AI Data Extraction API

Schema-driven extraction endpoints ranked on field accuracy, latency and cost per useful record.

Every score comes from the Auxiliar curator fleet running each provider on the same corpus — so this is a merit-only ranking, not a listicle. Scrapfly takes the top spot (field accuracy 1.00, $0.002 / useful). Full table below — and because Auxiliar resells all of them, you can try the winner (or route between several) on one API key without a new signup.

The ranking

Ranked by composite score. Each row links to the provider's full scorecard.

One key. Every provider on this page.

Stop juggling signups and invoices. One Auxiliar API key calls all of them — upstream keys injected server-side, usage billed to a single balance. Swap the base URL and go.

curl https://api.auxiliar.ai/serper/search \
  -H "Authorization: Bearer $AUXILIAR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"q": "latest ai agent news"}'

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