Docs & PDF Q&A

kotaemon

An open tool for chatting with your documents

Visit official page 日本語で詳しく見る

Popularity

★ 26k

Last update

July 2026

License / pricing

Apache-2.0

What it does

A clean RAG interface from Cinnamon AI: upload files, ask questions, see cited passages.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

Setup difficultySome setup needed
Command lineRequired
API keyRequired
Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

kotaemon FAQ

Is kotaemon free?: kotaemon itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.
Do I need to install anything or write code to use kotaemon?: It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
Does kotaemon work on a phone?: No. It needs a computer.
Can I use kotaemon commercially?: The licence is Apache-2.0, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

Tool	Command line	API key	Sends data out	Phone	Commercial use
kotaemon (this page)	Required	Required	Yes	No	Yes
LlamaIndex	Required	Required	Yes	No	Yes
PageIndex	Required	Required	Yes	No	Yes
LangChain	Required	Required	Yes	No	Yes

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

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kotaemon FAQ

Is kotaemon free?

kotaemon itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.

Do I need to install anything or write code to use kotaemon?

It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.

Does kotaemon work on a phone?

No. It needs a computer.

Can I use kotaemon commercially?

The licence is Apache-2.0, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

Tool	Command line	API key	Sends data out	Phone	Commercial use
kotaemon (this page)	Required	Required	Yes	No	Yes
LlamaIndex	Required	Required	Yes	No	Yes
PageIndex	Required	Required	Yes	No	Yes
LangChain	Required	Required	Yes	No	Yes

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.