How much of swc did AI write?
1%
LinkedInWho signed the commits
- Claude111 commits · 0.9%
- GitHub Copilot14 commits · 0.1%
- Warp1 commit · 0%
swc12,405 commits
- People12,281 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 | 33 | 13 | 39.4% |
| Oct 2026 | 134 | 2 | 1.5% |
| Sep 2026 | 169 | 2 | 1.2% |
| Aug 2026 | 60 | 2 | 3.3% |
| Jul 2026 | 79 | 6 | 7.6% |
| Jun 2026 | 65 | 0 | 0% |
| May 2026 | 98 | 1 | 1% |
| Apr 2026 | 74 | 0 | 0% |
| Mar 2026 | 114 | 3 | 2.6% |
| Feb 2026 | 68 | 7 | 10.3% |
| Jan 2026 | 82 | 41 | 50% |
| Dec 2025 | 88 | 20 | 22.7% |
| Nov 2025 | 96 | 12 | 12.5% |
| Oct 2025 | 66 | 9 | 13.6% |
| Sep 2025 | 129 | 1 | 0.8% |
| Aug 2025 | 56 | 3 | 5.4% |
| Jul 2025 | 208 | 2 | 1% |
| Jun 2025 | 201 | 0 | 0% |
| May 2025 | 102 | 0 | 0% |
| Apr 2025 | 137 | 0 | 0% |
| Mar 2025 | 165 | 0 | 0% |
| Feb 2025 | 143 | 0 | 0% |
| Jan 2025 | 139 | 0 | 0% |
| Dec 2024 | 53 | 0 | 0% |
The last commits an AI signed
- 21ee2a3fix(es/minifier): Preserve `this` and inferred names in sequence expressions (#12693)Claude· Nov 6, 2026
- be15e4bci: Allow LingyuCoder in the Rspack group (#12685)Claude· Nov 5, 2026
- 811a2affix(es/minifier): Stop checking fn param for ref (#12675)Claude· Nov 5, 2026
- 0362db5ci: Migrate `swc-bot` credentials to the `swc-project-bot` GitHub App (#12665)Claude· Nov 5, 2026
- fd3d637fix(es/typescript): Move minified semantic tests to `swc` to break the publish dependency cycle (#12663)Claude· Nov 3, 2026
- 5f28be2fix(es/minifier): Do not reassociate inexact float multiplications (#12657)Claude· Nov 2, 2026
- d6ef446chore: Remove `CLAUDE.md` (#12656)Claude· Nov 2, 2026
- 77429a4fix(es/minifier): Fold never-assigned variables in conditions (#12650)Claude· Nov 2, 2026
- b8c7ce9test(swc): Make stack trace tests independent of the Node.js version (#12654)Claude· Nov 2, 2026
- 182578etest(swc): Keep `pnpm-lock.yaml` unchanged when exec tests install helpers (#12655)Claude· Nov 2, 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 →Frequently asked questions
Which AI tool signed the most commits in swc?
Claude, with 111 of the 12,405 commits of swc.
The proof: its last signed commit, 21ee2a3
Since when does AI sign commits in swc?
Since July 2025: the first month an AI tool signed a commit of swc.
How many commits does swc have?
swc has 12,405 commits since December 22, 2017. Merges don’t count.
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