Benchmarking Document Parsing (and What Actually Matters)

Evaluating document parsing systems is complex due to the limitations of traditional metrics, which often fail to account for semantically correct but structurally different outputs. At Unstructured, the development of the SCORE (Structural and COntent Robust Evaluation) framework aims to address these limitations by allowing for multiple valid interpretations and normalizing diverse formats for fair comparison. This framework separates content accuracy from formatting differences, incorporates semantic-aware scoring, and integrates spatial intelligence for evaluating tables. Through extensive evaluation, Unstructured found that conventional metrics can distort system rankings by penalizing valid interpretations and format diversity, whereas a multi-dimensional assessment reveals distinct system profiles, such as content fidelity, hallucination control, and structural understanding. The evaluation also highlighted that performance differences among top-tier systems are often negligible for real-world applications, suggesting that operational characteristics should be prioritized. Additionally, the analysis showed that systems capable of interpretive diversity were unfairly penalized, despite providing richer outputs for downstream applications, and emphasized that production success depends on factors like edge case handling and operational reliability, which are often unmeasured by traditional evaluations. The evolving landscape of document parsing requires continuous, multi-dimensional evaluation frameworks that align with real-world enterprise needs, and Unstructured's platform provides multiple parsing strategies optimized for specific use cases.