Pyyan / Compare / Tesseract vs GLM-OCR
Tesseract vs GLM-OCR
2 of 5OCR & Document AI · verified 13 Aug 2026
TesseractGooglecurrent
GLM-OCRZhipu AIcurrent| Specification | Tesseract | GLM-OCR |
|---|---|---|
| Summary | The 1985 engine that ran OCR for a generation. | Currently the top scorer on document parsing. |
| OmniDocBench | ~55 | 94.6 |
| Open weights | Yes | Yes |
| Handles | Clean printed text | Tables, formulas, handwriting |
| Licence | Apache 2.0 | Open weights |
| Kind | Classical engine | Vision language model |
| Category | OCR & Document AI | OCR & Document AI |
| Official | Google ↗ | Zhipu AI ↗ |
Highlighted rows are where these differ.
Tesseract
- Included here as the baseline everything is measured against
- Struggles badly with layout, tables and anything skewed
Best for clean scans, and nothing else.
GLM-OCR
- Ahead of Gemini 3 Pro and GPT-5.2 on the same benchmark
- 94.0 on OCRBench
Best for complex documents end to end.