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factool
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factool

FacTool: Factuality Detection in Generative AI

by GAIR-NLP · GitHub
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chatgptfact-checkinggenerative-aiApache-2.0Python
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Check if texts generated by AI contain factual errors, helping ensure the information is accurate.

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2026-07-202026-08-31
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📄 About

FacTool: Factuality Detection in Generative AI

factool has 934 stars on GitHub. It has been forked 67 times. factool is written mainly in Python. It has been in active development since 2023. factool is available under the Apache-2.0 license. Its main topics are chatgpt, fact-checking, generative-ai, large-language-models.

Frequently asked questions

What is factool?

FacTool: Factuality Detection in Generative AI

Is factool open source?

factool is an open-source project. It is released under the Apache-2.0 license.

Is factool free?

Yes. factool is free and open source — you can use, modify and self-host it.

What license does factool use?

factool is available under the Apache-2.0 license.

What language is factool written in?

factool is written mainly in Python.

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