20.3%

of 2,564 commits were committed by an AI agent — a floor, not an estimate

20.3% agent · top contributor 67.9%10 contributors

team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

521

agent commits

2,043

human commits

agent contributors

67.9%

largest contributor

Assisted or autonomous

508assisted

13autonomous

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

Sep26

Peak month: 52.7%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	497	19.4%
GitHub Copilot	GitHub	21	0.8%
Cursor Agent	Anysphere	2	0.1%
OpenAI Codex	OpenAI	1	0%

Verify it yourself

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

f18fa025docs(upgrade): document event attributes, signal widening, testing and devClaude Code
7ff29627chore: satisfy the dedupe and prettier gatesClaude Code
a147c1a1fix(docs): import rolldown's oxc from a browser-reachable subpathClaude Code
897027abRefresh deduped pnpm lockfileGitHub Copilot
86c4df35fixupGitHub Copilot
a8eb1b61Prevent inline qwikloader emission inside SVG/MathML foreign content in v2GitHub Copilot
839be6a8docs(state): refresh post PR #244 merged — OSS-481 Done; NAPI-parity creatCursor Agent
d3e3b8c1feat(OSS-481): true NAPI parity for createOptimizer — raw-string boundary,Cursor Agent
7d9124e9fix: wrapper function naming for bare $() + smarter AST raw field strippinOpenAI Codex

What was excluded

Commits in window	3,209
Merge commits removed	−500
CI / dependency bots removed	−145
Considered	2,564

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 QwikDev/qwik

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