Dataset: 2026-10-27-catalog-ai-v2
Ruleset: b2e8889c66f7
Scanned: 2026-10-27
Window: February–September 15, 2026

Catalog tracking observation. This repository is measured with the same fixed window and ruleset, but it is not part of the published benchmark or its aggregate claims.

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing

01Result

pytest-dev/pytest ↗

pytest-dev/pytest AI coding statistics: 36%

of 367 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

36% agent · top contributor 52.3%12 contributors

team

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

132

agent commits

235

other considered commits

agent contributors

52.3%

largest contributor

02Drivers

What shapes this result

Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.

Assisted or autonomous

132assisted

0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. Autonomous — a bot identity authored the commit without a human identity attached.

Agent share by month

Peak month: 77.3%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	97	26.4%
Cursor Agent	Anysphere	46	12.5%
OpenAI Codex	OpenAI	1	0.3%

03Evidence

Inspect the matches

Public commit samples let you inspect the signatures behind the aggregate result.

Matched commit samples

b1a6976d on GitHubAdd changelog for help text wrapping fixClaude Code
2348a087 on GitHubconfig: preserve indentation and blank lines in help textsClaude Code
6062acad on GitHubfeat(packaging): version git archives of arbitrary commitsClaude Code
ee08c001 on GitHubAllow int for ``max_warnings`` in TOML (#14953)Cursor Agent
1a76d467 on GitHubrefactor(rewrite): minimal snapshots in BoolOp for walrus conflictsCursor Agent
a2f89c0c on GitHubfix(rewrite): show correct walrus values in BoolOp explanationsCursor Agent
f4897e82 on GitHubAvoid traceback formatting for xfail(run=False)OpenAI Codex

04Method

What entered the denominator

The result begins with commit history, removes merges and routine automation, and reports literal agent signatures as a lower bound.

Exclusion ledger

Commits in window	627
Merge commits removed	−144
CI / dependency bots removed	−116
Considered	367

Bots are excluded from the denominator entirely. Agent attribution requires a literal supported signature; no code-style inference is used.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →Cursor Agent commitsBrowse repositories with detected Cursor Agent signatures →OpenAI Codex commitsBrowse repositories with detected OpenAI Codex signatures →Python AI coding statisticsCompare evidence across Python repositories →GitHub AI commit analyzerInspect another repository with the same evidence model →

Reproduce this observation

Run the same detector locally.

Deterministic signature matching; no code-style inference. Squash merges can remove trailers, so this result remains a measured floor.

npx qmmit-cli pytest-dev/pytest

Scan another repository

Try

Month	Agent share	Considered commits
2026-02	18.2%	22
2026-03	0%	37
2026-04	0%	35
2026-05	22.8%	57
2026-06	5.9%	51
2026-07	58.8%	68
2026-08	77.3%	66
2026-09	67.7%	31