Docs & PDF Q&A

Khoj

Your personal AI second brain that learns from your knowledge.

Visit official page 日本語で詳しく見る

Popularity

★ 37k

Last update

August 2026

License / pricing

AGPL-3.0

What it does

Khoj helps you build your own AI companion that learns from your personal knowledge base, including notes, PDFs, and images. It acts as your 'second brain,' answering questions based on the information you've provided.

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.

Khoj FAQ

Is Khoj free?: Khoj 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 Khoj?: You install it like a normal desktop app. No command line involved.
Does Khoj work on a phone?: No. It needs a computer.
Can I use Khoj commercially?: The licence is AGPL-3.0. Using it commercially is fine, but if you distribute something built on it you may be required to release that under the same licence. Keep it internal, or check before distributing.

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
Khoj (this page)	Required	Required	Yes	No	Yes
LangChain	Required	Required	Yes	No	Yes
Docling	Required	Not needed	No	No	Yes
llm-app	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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What it does

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.

Khoj FAQ

Is Khoj free?

Khoj 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 Khoj?

You install it like a normal desktop app. No command line involved.

Does Khoj work on a phone?

No. It needs a computer.

Can I use Khoj commercially?

The licence is AGPL-3.0. Using it commercially is fine, but if you distribute something built on it you may be required to release that under the same licence. Keep it internal, or check before distributing.

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
Khoj (this page)	Required	Required	Yes	No	Yes
LangChain	Required	Required	Yes	No	Yes
Docling	Required	Not needed	No	No	Yes
llm-app	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.