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vim/vim ↗
14.9%
of 1,623 commits were committed by an AI agent — a floor, not an estimate
14.9% agent · top contributor 75.6%17 contributors
team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

242
agent commits
1,381
human commits
17
agent contributors
75.6%
largest contributor

Assisted or autonomous

242assisted
0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. The agent ran git commit during a working session, with a person there. Autonomous — a bot identity is the author, no human in the loop. Across the whole index, 93.7% of agent commits are assisted.

Agent share by month

Feb26
Mar26
Apr26
May26
Jun26
Jul26
Aug26
Sep26

Peak month: 37.9%. Bars are scaled to that peak, not to 100%.

Which agents

Claude CodeAnthropic23214.3%
GitHub CopilotGitHub60.4%
Gemini CLIGoogle30.2%
Cursor AgentAnysphere10.1%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

  • 722c9012patch 9.2.1111: Crash in a zero-width window with a status lineClaude Code
  • 24e2cf43patch 9.2.1109: Popup image is drawn over a popup with a higher zindexClaude Code
  • 9e80ca3cpatch 9.2.1105: tests: Test_lsp_incomplete_message_while_blocked fails on Claude Code
  • a96c3bc1runtime(robot): Include ftplugin and set comment optionsGitHub Copilot
  • 852cc912patch 9.2.0758: pum: No opacity when background not set for Popup menu groGitHub Copilot
  • bc2141d2runtime(2html): Convert to Vim9 scriptGitHub Copilot
  • 40fc78f0patch 9.2.0445: win_fix_scroll() called before win_comp_pos() in command_hGemini CLI
  • 20a124a6patch 9.2.0438: tests: test_plugin_termdebug is flakyGemini CLI
  • 6146f338patch 9.2.0410: test suite races when run with parallel makeGemini CLI
  • 2173c3e4patch 9.2.1107: getregionpos() is slow when only the region bounds are neeCursor Agent

What was excluded

Commits in window1,643
Merge commits removed−0
CI / dependency bots removed−20
Considered1,623

Bots are excluded from the denominator entirely. Counting dependabot as “AI-written code” is the fastest way to produce a meaningless number.

How this was measured

Measured over February–August 2026, cloned directly. Detection is deterministic string matching against signatures agents write about themselves — no heuristics, no style analysis. Merge commits and CI bots are excluded from the denominator. The figure is a floor: squash merges strip trailers, so real usage is higher. Contributor counts are aggregate — no individual is named.

Run it yourself: npx qmmit-cli vim/vim

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