Source: https://seerepo.com/r/jax-ml/jax/built
Markdown source: https://seerepo.com/r/jax-ml/jax/built.md
Description: jax is a Python repo. It uses AI through jaxlib, opt-einsum, and ml-dtypes. It has 656,473 written lines, with 391 test files.

# What is jax built with?

jax is a Python repo. It uses AI through jaxlib, opt-einsum, and ml-dtypes. It has 656,473 written lines, with 391 test files.

Read on November 6, 2026, at commit 88d646c.

Repository: https://github.com/jax-ml/jax

## Backend

### AI

- **jaxlib**: 46 files
- **opt-einsum**: 4 files
- **ml-dtypes**: 2 files

## Support

### Other

- **NumPy**: 218 files
- **SciPy**: 4 files

## Other repos with a similar stack

- [tensorflow/tfjs](https://seerepo.com/r/tensorflow/tfjs/built): jaxlib, opt-einsum, ml-dtypes · [Compare](https://seerepo.com/compare/jax-ml/jax/vs/tensorflow/tfjs)
- [ray-project/ray](https://seerepo.com/r/ray-project/ray/built): opt-einsum, ml-dtypes
- [keras-team/keras](https://seerepo.com/r/keras-team/keras/built): ml-dtypes

## Frequently asked questions

### What language is jax written in?

jax is written in Python, with 656,473 written lines.

### Does jax use AI?

Yes. jax uses AI through jaxlib, opt-einsum, and ml-dtypes.

### Does jax have tests?

Yes. jax has 391 test files.

### Which repos have a stack like jax's?

The ones that share most of its stack: tensorflow/tfjs, ray-project/ray, and keras-team/keras.

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.