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penzai
Python

penzai

A JAX research toolkit for building, editing, and visualizing neural networks.

by google-deepmind · GitHub
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fine-tuninginterpretabilityjaxApache-2.0Python
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Build, edit, and visualize neural networks using a toolkit that simplifies working with trained models.

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1 8941 893
2026-07-202026-08-31
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📄 About

A JAX research toolkit for building, editing, and visualizing neural networks.

penzai has 1.9k stars on GitHub. It has been forked 71 times. penzai is written mainly in Python. It has been in active development since 2024. penzai is available under the Apache-2.0 license. Its main topics are fine-tuning, interpretability, jax, neural-networks.

Frequently asked questions

What is penzai?

A JAX research toolkit for building, editing, and visualizing neural networks.

Is penzai open source?

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

Is penzai free?

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

What license does penzai use?

penzai is available under the Apache-2.0 license.

What language is penzai written in?

penzai is written mainly in Python.

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