Kraken API
OCR engine for historical documents and manuscripts, with trainable models for unusual scripts.
- Model ID
- kraken/kraken
- Type
- Open source
- Price
- 1 credit / page ($1.00 per 1,000 pages)
- Typical speed
- 1.5 s / page
- Inputs
- images
- Languages
- Many scripts, incl. right-to-left
- Max pages per request
- 500
- Output
- Markdown, JSON with positions
- License
- Apache-2.0
- Supports
- HandwritingBounding boxesMultilingual
curl https://api.ocrrouter.ai/v1/ocr \
-H "Authorization: Bearer $OCRROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kraken/kraken",
"file_url": "https://example.com/invoice.pdf",
"format": "markdown"
}'Kraken is not connected yet. The price below is an estimate. You can call the models that are live today with the same request.
Kraken speed and reliability
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Measured on our own traffic over the last 7 days.
Kraken pricing
Kraken costs 1 credits per page. One dollar buys 1,000 credits, so 1,000 pages cost $1.00. You only pay for pages that return a result.
New accounts get 200 free credits, enough for about 200 pages with this model. See pricing for credit packs.
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1Azure Document IntelligenceAzure layout model with tables, selection marks and prebuilt invoice and ID readers.
azure/document-intelligence15 credits / page2Google Document AIGoogle Cloud OCR with layout parsing and specialised processors.google/document-ai3 credits / page3ChandraDatalab's OCR model that keeps layout and handles forms, tables and handwriting.datalab/chandra2 credits / page