py-spy vs jan

py-spy and jan share 4 technologies: console, indicatif, log, and env_logger. Both are written in Rust.

Read it as markdown

What they share and what sets them apart

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
py-spy92,808 lines written39 code files
jan478,180 lines written949 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
py-spy0.2% of its commits signed by AIWith Claude Code
jan0.5% of its commits signed by AIWith GitHub Copilot, Claude Code, Cursor, Factory, Jules, and Aider
ActivityFrom GitHub and its history, on the day SeeRepo read it.
py-spyLast push November 6, 2026495 commits15,631 stars
janLast push November 5, 20267,455 commits45,500 stars
TestsThe files that test the code, and the share of code files a test imports.
py-spy16 test files
jan527 test files48.9% of its code files have a test that imports them

Frequently asked questions

Which is bigger, py-spy or jan?
jan, with 478,180 lines written; py-spy has 92,808.

The proof: janhq/jan's code at commit 879e6ae

Which has more GitHub stars, py-spy or jan?
jan, with 45,500 stars; py-spy has 15,631.

The proof: janhq/jan on GitHub

Which has more tests, py-spy or jan?
jan, with 527 test files; py-spy has 16.

The proof: janhq/jan's code at commit 879e6ae

Which was updated more recently, py-spy or jan?
py-spy: its last push was on November 6, 2026, and jan's on November 5, 2026.

The proof: benfred/py-spy's commits on GitHub

Which has more commits signed by AI, py-spy or jan?
jan: an AI signed 0.5% of its commits, with GitHub Copilot, Claude Code, Cursor, Factory, Jules, and Aider; in py-spy, 0.2%.

The proof: the commits each tool signed in janhq/jan

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