3.4%

of 9,178 commits were committed by an AI agent — a floor, not an estimate

3.4% agent · top contributor 19.9%98 contributors

org-wide

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

316

agent commits

8,862

human commits

agent contributors

19.9%

largest contributor

Assisted or autonomous

315assisted

1autonomous

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

Mar26

Apr26

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 31.7%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	290	3.2%
Cursor Agent	Anysphere	14	0.2%
Devin	Cognition	7	0.1%
GitHub Copilot	GitHub	5	0.1%
OpenAI Codex	OpenAI	2	0%

Verify it yourself

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

a651e818refactor(agents): remove dead hook IPC and derive shared agent defaults (#Claude Code
df48337dfix(jira): scope reporter seed and keep multi-user fields on the text pathClaude Code
60a7ac38feat(browser): edit a page annotation's comment and intent inline in the tClaude Code
d1ccfcfffix(settings): normalize and validate branch prefixes (#7772)Cursor Agent
34caad78fix(browser): unstick Ctrl+Tab switcher when opened from a focused browserCursor Agent
19ab395afix(browser): keep webview guests alive across worktree switches (#6408)Cursor Agent
9cb04b5afix(orchestration): stop fencing fresh-run callers and accept revoked coorDevin
c24ebcadfix(rate-limits): unstick Claude "Limited" usage — respect Retry-After andDevin
7fe6742bfix(pr-comments): let users mark comment authors as bots for the Humans/BoDevin
03b88951feat: expand ai commit agent support (#1928)GitHub Copilot
53f911ddSupport GitHub Copilot CLI agent detection (#866)GitHub Copilot
82fe59fcfix: correct IME candidate window position when typing Japanese in terminaGitHub Copilot
6e3ebf53fix(terminal): arbitrate active desktop viewport ownership (#8252)OpenAI Codex
543d9a6cfix(linux): avoid Ubuntu orca package conflict (#1306)OpenAI Codex

What was excluded

Commits in window	10,020
Merge commits removed	−6
CI / dependency bots removed	−836
Considered	9,178

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 stablyai/orca

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