2026 年开发者最佳 OCR 库怎么选:Tesseract、PaddleOCR、Surya 与 LLM 方案对比
LlamaIndex 发布 2026 年开发者 OCR 库选型指南,提出按真实输入准确率、集成复杂度和失败表现三条标准评估,而非只看干净文档上的排名。文章对比了 Tesseract(100+ 语言)、PaddleOCR(PP-OCRv4)、Surya(90+ 语言)、EasyOCR(80+ 语言)、docTR,以及 Mistral OCR、olmOCR、Qwen2.5-VL 等基于视觉语言模型的方案,并指出后者在结构化数据上存在幻觉与非确定性输出风险。

the output includes citations and confidence scores for human-in-the-loop validation when compliance requires it. The output comes back as structured markdown, JSON, or HTML with metadata, rather than raw text you need to parse yourself. Picking the Right Tool The short version: Clean typed documents, controlled quality, high volume: Tesseract or PaddleOCR; Complex layouts, multilingual, need better accuracy: Surya or PaddleOCR; Irregular layouts, forms, need contextual understanding: LLM-based
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