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We benchmarked PageIndex Chat against ChatGPT 5.1 on real-world long documents. PageIndex achieved 100% accuracy compared to ChatGPT 5.1's 59-82%, with faster response times and page-level traceability.

Experience the power of reasoning-based RAG with PageIndex Chat - our new conversational interface for intelligent document understanding.

We present PageIndex, a vectorless, reasoning-based RAG system that simulates how human experts navigate and extract knowledge from long documents through tree search.

PageIndex OCR is the world's first OCR model that understands documents as a whole — preserving full structure across pages, instead of treating each page as an independent unit.