Dataset: 2026-09-18-v3.0
Ruleset: b2e8889c66f7
Scanned: 2026-09-16
Window: February–September 15, 2026

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01Result

PrefectHQ/prefect ↗

PrefectHQ/prefect AI coding statistics: 76.8%

of 1,192 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

76.8% agent · top contributor 75.7%37 contributors

team

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

916

agent commits

276

other considered commits

agent contributors

75.7%

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

193assisted

723autonomous

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. Across the whole index, 96% of agent commits are assisted.

Agent share by month

Agent-attributed commit share by month
Month	Agent share	Considered commits
2026-01	100%	3
2026-02	88%	266
2026-03	81.3%	241
2026-04	87.5%	144
2026-05	66.8%	184
2026-06	69.2%	107
2026-07	69.8%	96
2026-08	57.8%	102
2026-09	69.4%	49

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

Which agents

Agent	Vendor	Commits	Share
Devin	Cognition	719	60.3%
Claude Code	Anthropic	201	16.9%
GitHub Copilot	GitHub	2	0.2%
Cursor Agent	Anysphere	1	0.1%

03Evidence

Inspect the matches

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

Matched commit samples

d695f41b on GitHubFix date-dependent failure in interval schedule form test (#23125)Devin
253a8fc9 on GitHubui-v2: improve dark-mode readability of flow run cards (#23114)Devin
09fe6a7e on GitHubFormat deployment Created/Updated timestamps in ui-v2 metadata (#23112)Devin
c3496c2a on GitHubAdd Redis Sentinel support to prefect-redis (#22377)Claude Code
1efe2981 on GitHubci: pass the release ref through env in the prerelease tag check (#22882)Claude Code
517a7c41 on GitHubConfirm suspension events against the flow run instead of state-by-id (#22Claude Code
467c391f on GitHubfix: apprise-logger-level-normalization (#21709)GitHub Copilot
c62da6b6 on GitHubfix: correct return type annotation for dbt_runner_freshness_success fixtuGitHub Copilot
9d0940af on GitHubfix(ui-v2): allow any float precision on schema number inputs (#22643)Cursor Agent

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	1,601
Merge commits removed	−0
CI / dependency bots removed	−409
Considered	1,192

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

05Provenance

Pinned to a source state

This observation names the repository state, release, and detector that produced it. Use these identifiers when reproducing or citing the result.

Dataset release: 2026-09-18-v3.0
Scan date: 2026-09-16
Ruleset: sha256:b2e8889c66f72c18a61839f0bf1a9f77b5481ba2def044dba33c797b2f2bdcae
Canonical repository: PrefectHQ/prefect
Default branch: main
Resolved HEAD: 1d8b55eb65110d16979fff3116c875710fb2caf6 ↗
Resolved: 2026-09-16
Measurement window: February–September 15, 2026

Download observation JSONDeterministic export · same values as this page

06Peer context

Position among comparable repositories

The cohort uses the same release and measurement window, then narrows to the repository’s ecosystem and removes low-activity observations.

CohortPython · 247 eligible repositories · at least 100 considered commits2026-09-18-v3.0 · February–September 15, 2026 · 145 of 392 ecosystem repositories excluded

Agent-commit share position99th percentile

Midrank percentile; equal shares split the tied positions.

Repository: 76.8%
Cohort median: 6.3%
Share rank: 4 / 247

0th50th100th

Percentile = (repositories below + half of 1 tied repository) ÷ 247.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →GitHub Copilot commitsBrowse repositories with detected GitHub Copilot signatures →Cursor Agent commitsBrowse repositories with detected Cursor Agent signatures →Devin commitsBrowse repositories with detected Devin signatures →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 PrefectHQ/prefect

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