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The Hidden Ceiling: How OCR Quality Limits RAG Performance

The Hidden Ceiling: How OCR Quality Limits RAG Performance

Benchmarking shows OCR errors cap text-based RAG: top OCR still misses 4-5% NDCG@5, while Mixedbread's multimodal vector store beats perfect text by 12% and recovers 70% of lost answer accuracy.

May 14, 2025
22 min read
Aamir Shakir, Julius Lipp, and 3 others