22.4%

of 1,875 commits were committed by an AI agent — a floor, not an estimate

22.4% agent · top contributor 7.1%120 contributors

org-wide

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

420

agent commits

1,455

human commits

120

agent contributors

7.1%

largest contributor

Assisted or autonomous

417assisted

3autonomous

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: 36.1%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	220	11.7%
GitHub Copilot	GitHub	147	7.8%
Cursor Agent	Anysphere	76	4.1%
OpenAI Codex	OpenAI	2	0.1%

Verify it yourself

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

cd35363afix(history): early user messages vanish or jump mid-run when pagination aClaude Code
8a830f63fix(deps): depend on renamed tenki package instead of tenki-sandbox (#5087Claude Code
2eba6544eval(memory): add a reproducible hybrid eviction evaluation (#4810)Claude Code
23d8e4b3feat(scripts): support skipping frontend build on make start (#5053)GitHub Copilot
062ba9ddfeat: integrate MiniMax Code as a native ACP agent (#4846)GitHub Copilot
e593ad6cfix(scheduler): coerce serialized task timestamps (#4785)GitHub Copilot
851e7666fix(docker): don't abort Docker startup when .env is missing (#4956)Cursor Agent
ea9b7014fix(clarification): drop sibling tool calls before interrupt (#4908)Cursor Agent
fd41fdb0feat(middleware): add structured tool result meta and tool-progress state Cursor Agent
c542185afeat(extensions): add gateway contribution points and packaged extension mOpenAI Codex
e119dc74feat(codex): support explicit OpenAI Responses API config (#1235)OpenAI Codex

What was excluded

Commits in window	1,982
Merge commits removed	−37
CI / dependency bots removed	−70
Considered	1,875

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 bytedance/deer-flow

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