How much of ruff did AI write?

0.4%

AI signed 0.4% of the 17,985 commits of ruff. Signed by Claude (70), Codex (9), and GitHub Copilot (1).

Since its first commit, on August 9, 2022. Read on November 5, 2026, at commit d017c82. Read it as markdown

Who signed the commits

ruff17,985 commits

People17,913 commits

Commits per month

Each month's commits up to its last one, with those an AI signed. Merges don't count.

Signed by AI
People

The figures, month by month

Month	Commits	Signed by AI	Share
Nov 2026	113	0	0%
Oct 2026	426	1	0.2%
Sep 2026	447	1	0.2%
Aug 2026	510	4	0.8%
Jul 2026	542	4	0.7%
Jun 2026	553	2	0.4%
May 2026	277	11	4%
Apr 2026	379	6	1.6%
Mar 2026	421	12	2.9%
Feb 2026	442	19	4.3%
Jan 2026	451	14	3.1%
Dec 2025	435	2	0.5%
Nov 2025	349	2	0.6%
Oct 2025	322	1	0.3%
Sep 2025	327	0	0%
Aug 2025	339	0	0%
Jul 2025	397	0	0%
Jun 2025	386	0	0%
May 2025	430	0	0%
Apr 2025	438	0	0%
Mar 2025	345	0	0%
Feb 2025	309	0	0%
Jan 2025	403	0	0%
Dec 2024	298	0	0%

The last commits an AI signed

59f02ba[ty] Fix duplicated word in relation.rs comment (#29216)Claude· Oct 8, 2026
882c26e[ty] Fix typo "Non-existant" to "Non-existent" in mdtest comment (#28728)Claude· Sep 21, 2026
fca5c7cFix duplicated "of" in ClientOptions doc comment (#27978)Claude· Aug 22, 2026
5428c21[ty] Expand nested union aliases when finding a TypedDict or callable (#27740)Claude· Aug 15, 2026
a9130f3[`pyupgrade`] Add rule to replace `while 1` with `while True` (`while-one`, `UP048`) (#27190)Claude· Aug 12, 2026

How we know

Every AI coding tool leaves its signature in the commits it makes: a Co-Authored-By line, its own author name, or the merge of its branch. SeeRepo reads those signatures in the repo's history; a commit without one counts as made by people, and merges don't count.

Every AI tool SeeRepo recognizes →