32.1%

of 396 commits were committed by an AI agent — a floor, not an estimate

32.1% agent · top contributor 78%2 contributors

individual

One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.

127

agent commits

269

human commits

agent contributors

78%

largest contributor

Assisted or autonomous

127assisted

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

May26

Jun26

Jul26

Peak month: 42.7%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	126	31.8%
Cursor Agent	Anysphere	1	0.3%

Verify it yourself

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

b0d6ab88Refresh text-create model mix from judged text evalsClaude Code
00db2b41Support text-brief eval sets alongside image setsClaude Code
ee4401afRefresh image-create model mix from judged evalsClaude Code
1ca4bff5Add Cursor Cloud setup instructions to AGENTS.md (#607)Cursor Agent

What was excluded

Commits in window	436
Merge commits removed	−40
CI / dependency bots removed	−0
Considered	396

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 abi/screenshot-to-code

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