Show HN: PageIndex Chat – AI reader for long documents

Most current LLMs struggle with long documents due to context-length limitations. PageIndex Chat is an AI system specifically designed for conversational interaction with long documents. It delivers higher accuracy than ChatGPT 5.1 Thinking while remaining faster than ChatGPT 5.1 Instant. Additionally, PageIndex Chat provides page-level references for every claim in its responses, making answers transparent and verifiable.

Learn more at: https://pageindex.ai/chat