Which is cheaper, Docling or Chandra?

They cost the same here: 2 credits / page.

Which is more accurate?

It depends on the document. Docling is strongest at structured export for rag, and Chandra at complex layouts and handwriting. Run a few of your own files through both and compare the output.

Yes. Put one as model and the other in fallbacks. If the first fails, the second reads the page, and you pay only for the one that answered.

Docling vs Chandra

Chandra is faster; only Chandra supports handwriting, forms, multilingual.

Get API key All models

	Docling`ibm/docling`	Chandra`datalab/chandra`
Type	Open source	Open source
Price	2 credits / page	2 credits / page
Per 1,000 pages	$2.00	$2.00
Typical speed	2.2 s / page	2.0 s / page
Best for	Structured export for RAG	Complex layouts and handwriting
Inputs	PDF, images, DOCX	PDF, images
Languages	Latin scripts, CJK	40+ languages
Max pages per request	500	500
Tables	✓ Yes	✓ Yes
Handwriting	No	✓ Yes
Math	✓ Yes	✓ Yes
Bounding boxes	✓ Yes	✓ Yes
Confidence	No	No
Forms	No	✓ Yes
Multilingual	No	✓ Yes
On OCRRouter	Coming soon	Coming soon

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

What each one is

Docling

IBM's open-source document converter with a structured document model.

Docling details

Chandra

Datalab's OCR model that keeps layout and handles forms, tables and handwriting.

Chandra details

Use one, fall back to the other

Request body

{
  "model": "ibm/docling",
  "fallbacks": ["datalab/chandra"],
  "file_url": "https://example.com/document.pdf"
}

Questions

More comparisons

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