30.8%

of 13,292 commits were committed by an AI agent — a floor, not an estimate

30.8% agent · top contributor 9.7%155 contributors

org-wide

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

4,094

agent commits

9,198

human commits

155

agent contributors

9.7%

largest contributor

Assisted or autonomous

3877assisted

217autonomous

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

Peak month: 63.1%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub Copilot	GitHub	4038	30.4%
Claude Code	Anthropic	53	0.4%
Cursor Agent	Anysphere	7	0.1%

Verify it yourself

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

6abe1bf3Improve pet animations and gravity mechanics (#330969)GitHub Copilot
bb7e3708agentHost: Attribute telemetry to initiating clients (#330982)GitHub Copilot
d8baf228Fix launch skill on macOS default TMPDIR (#330988)GitHub Copilot
9d3a9fa3sessions: make the discovered-config nudge's X the "don't show again" (#33Claude Code
40c128edchat: BYOK models unlock Copilot Agent Host in the pickersClaude Code
154f3cbcagentHost: mark the Copilot resource optional when BYOK models existClaude Code
2df67b33Fix Modern UI editor tab decoration color on full label (#325291)Cursor Agent
3855b8b8debug: right-align toolbar actions in exception widget (#324471)Cursor Agent
4ac53226fix(terminal): track ligatures addon config for change detection (#318992)Cursor Agent

What was excluded

Commits in window	15,602
Merge commits removed	−1,953
CI / dependency bots removed	−357
Considered	13,292

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 microsoft/vscode

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