Tesseract vs Chandra
Tesseract is cheaper per page; Tesseract is faster; only Chandra supports tables, math, handwriting, forms, bounding boxes.
Tesseracttesseract/tesseract | Chandradatalab/chandra | |
|---|---|---|
| Type | Open source | Open source |
| Price | Free | 2 credits / page |
| Per 1,000 pages | $0.00 | $2.00 |
| Typical speed | 0.6 s / page | 2.0 s / page |
| Best for | Clean printed text, free | Complex layouts and handwriting |
| Inputs | PDF, images | PDF, images |
| Languages | 100+ languages | 40+ languages |
| Max pages per request | 500 | 500 |
| Tables | No | ✓ Yes |
| Handwriting | No | ✓ Yes |
| Math | No | ✓ Yes |
| Bounding boxes | No | ✓ Yes |
| Confidence | No | No |
| Forms | No | ✓ Yes |
| Multilingual | ✓ Yes | ✓ Yes |
| On OCRRouter | Available | 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
Chandra
Datalab's OCR model that keeps layout and handles forms, tables and handwriting.
Chandra detailsUse one, fall back to the other
Request body
{
"model": "tesseract/tesseract",
"fallbacks": ["datalab/chandra"],
"file_url": "https://example.com/document.pdf"
}