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PageIndex

Python library that builds a tree index of long documents and has an LLM reason through it to retrieve answers, without a vector database or chunking.

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IndexedMIT★ 39,601
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pip install pageindex

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About

PageIndex is a retrieval engine for long documents that replaces a vector index with a hierarchical tree index and uses LLM reasoning to search it. It works in two steps, generating a tree for each document and then searching it, and the README says it needs no vector database and no chunking. A PageIndex SDK runs in local mode with the user's own LLM key or against PageIndex Cloud. It is a retrieval component rather than a general agent framework.

Use cases: knowledge-base, document-processing

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Fact sheet

Languages
PythonREADME
Packages
pageindex (pypi)README
Deploys to
local, pageindex-cloudREADME
Model providers
openai, anthropicREADME
Maturity
Betagithub.com

Facts extracted by Claude Sonnet 5.5 from the linked sources on Oct 24, 2026; reviewed Oct 24, 2026. Wrong fact? Tell us.

Alternatives

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Signals

Stars
39,601
Forks
3,426
Open issues
51
Weekly downloads
43,597
Last commit
Oct 24, 2026 (6 days ago)
Last release
Oct 24, 2026 (6 days ago)
Last package publish
Oct 24, 2026 (6 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Packages
pypi pageindex
License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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Cite this page

PageIndex. Agent Mart. https://agentmart.dev/harnesses/pageindex (last updated 2026-10-24)