34.3%

of 4,812 commits were committed by an AI agent — a floor, not an estimate

34.3% agent · top contributor 76.5%22 contributors

team

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

1,651

agent commits

3,161

human commits

agent contributors

76.5%

largest contributor

Assisted or autonomous

1651assisted

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

Jun26

Jul26

Aug26

Sep26

Peak month: 51.4%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	1631	33.9%
GitHub Copilot	GitHub	13	0.3%
Cursor Agent	Anysphere	6	0.1%
OpenAI Codex	OpenAI	2	0%

Verify it yourself

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

1f311b14♻️ refactor(mecha): decide the tool rules of a run in the shared core (#19Claude Code
7bca055b✨ feat(resource): preview files and pages in an inline right detail panel Claude Code
394ba3a5✨ feat(goal): create and supervise a goal from a hetero agent conversationClaude Code
64d3bdb9💄 style: add preserve thinking feature for Qwen3.7 Max model (#13494)GitHub Copilot
867e22a9💄 style: Add new DeepSeek-V4 models (#14110)GitHub Copilot
d3159436💄 style: Add new DeepSeek-V4 models (#14110)GitHub Copilot
de841a3b🐛 fix(heterogeneous-agent): scope models to topics (#18658)Cursor Agent
94325a63🐛 fix(utils): handle non-ASCII text in browser base64 helpers (#16880)Cursor Agent
a92e46e0🐛 fix(utils): preserve valid surrogate pairs in sanitizeUTF8 (#16879)Cursor Agent
1d7a0d6b👷 build(desktop): remove nightly release channel (#13480)OpenAI Codex
0e57fd99✨ feat(onboarding): agent web onboarding, feature toggle, and lifecycle syOpenAI Codex

What was excluded

Commits in window	4,965
Merge commits removed	−103
CI / dependency bots removed	−50
Considered	4,812

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 lobehub/lobehub

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