27.2%

of 298 commits were committed by an AI agent — a floor, not an estimate

27.2% agent · top contributor 97.5%2 contributors

individual

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

agent commits

217

human commits

agent contributors

97.5%

largest contributor

Assisted or autonomous

81assisted

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

Jul26

Aug26

Sep26

Peak month: 70.8%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code

Anthropic

27.2%

Verify it yourself

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

7df226b4feat(core): compaction-as-memory sink, <untrusted-data> injection framing,Claude Code
eee9f3d9docs(readme): add news for subagent runtime and compaction batchesClaude Code
4f485541fix(ci): silence the config-layer fixture with an inline gitleaks:allowClaude Code

What was excluded

Commits in window	368
Merge commits removed	−70
CI / dependency bots removed	−0
Considered	298

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 HKUDS/DeepCode

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