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GLM-OCR vs Nanonets-OCR

GLM-OCR is faster; only GLM-OCR supports bounding boxes, confidence; only Nanonets-OCR supports forms.

GLM-OCRzai/glm-ocrNanonets-OCRnanonets/nanonets-ocr
TypeOpen sourceOpen source
Price2 credits / page2 credits / page
Per 1,000 pages$2.00$2.00
Typical speed1.3 s / page1.8 s / page
Best forLow-cost general documentsMarkdown with semantic tags
InputsPDF, imagesPDF, images
Languages100+ languagesMultilingual
Max pages per request500500
Tables✓ Yes✓ Yes
HandwritingNoNo
Math✓ Yes✓ Yes
Bounding boxes✓ YesNo
Confidence✓ YesNo
FormsNo✓ Yes
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

GLM-OCR

Small open-source OCR model from Z.ai with layout regions. MIT licensed.

GLM-OCR details

Nanonets-OCR

Open image-to-Markdown model that tags tables, equations, signatures, watermarks and checkboxes.

Nanonets-OCR details

Use one, fall back to the other

Request body
{
  "model": "zai/glm-ocr",
  "fallbacks": ["nanonets/nanonets-ocr"],
  "file_url": "https://example.com/document.pdf"
}

Questions

More comparisons

GLM-OCR alternativesNanonets-OCR alternatives