Open source repo

What's inside janhq/jan

janhq/jan is a Rust repo with 423,916 lines written in 857 files. jan is built with React and Vite and uses PostHog and OpenAI. AI signed 0.6% of the 7,424 commits of jan.

Its description on GitHub: “Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.”

Rust 45,184

Read on October 31, 2026, at commit b8071a1.

What the card proved: what it’s built with on the left, what it uses on the right.

See each one with its proof

Its folders

TechnologiesWhat is jan built with?jan is built with React and Vite and uses PostHog and OpenAI.

Who writes itHow much of jan did AI write?0.6%AI signed 0.6% of the 7,424 commits of jan.

In figures

lines written: 423,916; The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
files: 857; The product’s, not counting tests.
test files: 460; The files that test the code.
technologies: 4; Each one with the file and line that prove it.

SeeRepo read its code facts-only: no AI, and none of its code is kept.

Frequently asked questions

What is janhq/jan?

janhq/jan is a Rust repo with 423,916 lines written in 857 files. Its description on GitHub: “Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.”

The proof: its page on GitHub

What is jan built with?

jan is built with React and Vite and uses PostHog and OpenAI.

The proof: each technology with its file and line

How much of jan did AI write?

AI signed 0.6% of the 7,424 commits of jan.

The proof: the commits each tool signed

How many stars does jan have on GitHub?

jan had 45,184 stars on GitHub on October 31, 2026.

The proof: its page on GitHub

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