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NixOS/nixpkgs ↗
0.1%
of 76,906 commits were committed by an AI agent — a floor, not an estimate
0.1% agent · top contributor 11.2%44 contributors
org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

89
agent commits
76,817
human commits
44
agent contributors
11.2%
largest contributor

Assisted or autonomous

89assisted
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

Jan26
Feb26
Mar26
Apr26
May26
Jun26
Jul26
Aug26
Sep26

Peak month: 0.2%. Bars are scaled to that peak, not to 100%.

Which agents

Claude CodeAnthropic810.1%
GitHub CopilotGitHub30%
Cursor AgentAnysphere20%
Gemini CLIGoogle10%
DevinCognition10%
OpenAI CodexOpenAI10%

Verify it yourself

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

  • 6b0e589bpython3Packages.nvidia-cutlass-dsl: 4.6.0.dev0 -> 4.7.0Claude Code
  • 89ea8868devenv: 2.2.2 -> 2.3.0Claude Code
  • 83cb3b32or-tools: fix Python 3.14 support, drop broken markerClaude Code
  • f322c396github-copilot-cli: 1.0.26 -> 1.0.61GitHub Copilot
  • 8c8786cegithub-copilot-cli: use universal node packageGitHub Copilot
  • 374db7f8python3Packages.pyads: skip pre-release tags in update scriptGitHub Copilot
  • 57552bb3direvent: 5.4 -> 5.5Cursor Agent
  • 71e587c3albyhub: 1.22.2 -> 1.23.0Cursor Agent
  • 61c0c7acnixos/tests/matrix/mautrix-meta: fix tests for newer mautrix versionsGemini CLI
  • dd2ea746graphite-cli: fix darwin buildDevin
  • 6bb4c2a4mise: add git to nativeCheckInputsOpenAI Codex

What was excluded

Commits in window134,550
Merge commits removed−57,583
CI / dependency bots removed−61
Considered76,906

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 NixOS/nixpkgs

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