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Google Document AI vs Kraken

Kraken is cheaper per page; Google Document AI is faster; only Google Document AI supports tables, forms, confidence.

Google Document AIgoogle/document-aiKrakenkraken/kraken
TypeOCR APIOpen source
Price3 credits / page1 credit / page
Per 1,000 pages$3.00$1.00
Typical speed1.4 s / page1.5 s / page
Best forMultilingual scansHistorical documents and manuscripts
InputsPDF, imagesimages
Languages200+ languagesMany scripts, incl. right-to-left
Max pages per request500500
Tables✓ YesNo
Handwriting✓ Yes✓ Yes
MathNoNo
Bounding boxes✓ Yes✓ Yes
Confidence✓ YesNo
Forms✓ YesNo
Multilingual✓ Yes✓ Yes
On OCRRouterAvailableComing soon

Prices are what you pay on OCRRouter. Speed is the provider's typical figure, not a benchmark we ran.

What each one is

Google Document AI

Google Cloud OCR with layout parsing and specialised processors.

Google Document AI details

Kraken

OCR engine for historical documents and manuscripts, with trainable models for unusual scripts.

Kraken details

Use one, fall back to the other

Request body
{
  "model": "google/document-ai",
  "fallbacks": ["kraken/kraken"],
  "file_url": "https://example.com/document.pdf"
}

Questions

More comparisons

Google Document AI alternativesKraken alternatives