8.1%

of 458 commits were committed by an AI agent — a floor, not an estimate

8.1% agent · top contributor 32.4%25 contributors

org-wide

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

agent commits

421

human commits

agent contributors

32.4%

largest contributor

Assisted or autonomous

36assisted

1autonomous

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: 15.4%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	28	6.1%
Cursor Agent	Anysphere	9	2%
GitHub Copilot	GitHub	1	0.2%

Verify it yourself

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

6bffc712feat(anthropic): add claude-sonnet-5 model support (#11475)Claude Code
041a7558fix(anthropic): preserve generic tool_search_tool_result blocks (#11421)Claude Code
d36ec6a6fix(anthropic): preserve gateway cost on the native stream path (#11359)Claude Code
5ff9179efix(google-genai): guard streaming chunks when candidate has no content (#Cursor Agent
1c4dadbcfix(anthropic): preserve gateway (LiteLLM) cost in streamed metadata (#112Cursor Agent
04edb8d0docs(ibm): fix "Recieved" typo in tool_choice error message (#11066)Cursor Agent
67cc069afix(docs): update an outdated middleware example (#10146)GitHub Copilot

What was excluded

Commits in window	789
Merge commits removed	−47
CI / dependency bots removed	−284
Considered	458

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 langchain-ai/langchainjs

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