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.

Solving i18n for client-side and resource-constrained environments.

01Result

unicode-org/icu4x ↗

unicode-org/icu4x AI coding statistics: 7.9%

of 545 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

7.9% agent · top contributor 83.7%5 contributors

individual

One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.

agent commits

502

other considered commits

agent contributors

83.7%

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

43assisted

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: 20.3%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Gemini CLI	Google	38	7%
Claude Code	Anthropic	3	0.6%
GitHub Copilot	GitHub	2	0.4%
OpenAI Codex	OpenAI	1	0.2%

03Evidence

Inspect the matches

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

Matched commit samples

0a699360 on GitHubOptimize CoverageByXPathLevels data model and trie queries (#8333)Gemini CLI
15ef4d6a on GitHubAdd infallible display name fns; make FFI fns infallible, too (#8345)Gemini CLI
148eea9f on GitHubUnstable FFI for icu_locale::names (#8341)Gemini CLI
0df7de48 on GitHubFix UB: validate replacement byte in TinyAsciiStr lossy constructors (#778Claude Code
00bcbe03 on GitHubFix UB: replace unsafe String::from_utf8_unchecked (#7781)Claude Code
9c0923d0 on GitHubFix UB: use || instead of && (#7779)Claude Code
3b55a3ee on GitHubCheck source data diffs in CI (#7908)GitHub Copilot
dd7f6808 on GitHubfeat(ffi): implement ZonedDateTimeFormatter::format_same_calendar (#7645)GitHub Copilot
d068082f on GitHubCreate design doc for DateTimeFieldBag (#8062)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	571
Merge commits removed	−1
CI / dependency bots removed	−25
Considered	545

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 →GitHub Copilot commitsBrowse repositories with detected GitHub Copilot signatures →OpenAI Codex commitsBrowse repositories with detected OpenAI Codex signatures →Gemini CLI commitsBrowse repositories with detected Gemini CLI signatures →Rust AI coding statisticsCompare evidence across Rust 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 unicode-org/icu4x

Scan another repository

Try

Month	Agent share	Considered commits
2026-02	1%	104
2026-03	7.5%	80
2026-04	5%	40
2026-05	10.3%	58
2026-06	20.3%	74
2026-07	8.5%	71
2026-08	7.9%	89
2026-09	0%	29