A vision LLM parser in Enterprise Document Intelligence reads charts and diagrams in PDFs by interpreting page images, extracting visual content beyond text. It outputs searchable descriptions of charts, unlike text parsers that return empty regions for image-based data. The model performs slower and costs more than text parsers, with GPT-4.1 outperforming GPT-4o-mini in chart interpretation.
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Summary by ByteBrief
Two PDF Layers That Drive RAG Quality