What is PageIndex?
PageIndex is a document AI engine that retrieves answers from long documents using reasoning instead of vector search. It offers a chat app with line-level citations, an open source or cloud developer option, and a Page Search API that finds relevant pages so LLMs read less text.
Key facts
- Category
- Research
- Website
- https://pageindex.ai/
- Listing updated
- Nov 11, 2026
PageIndex FAQ
What is PageIndex?
PageIndex is a document AI engine that retrieves answers from long documents using reasoning instead of vector search. It offers a chat app with line-level citations, an open source or cloud developer option, and a Page Search API that finds relevant pages so LLMs read less text.
What are alternatives to PageIndex?
Research alternatives to PageIndex include ChatPDF, Scholarcy, ResearchGate, Consensus, AskYourPDF and Scite.