Pulse
2026-09-18-v3.0
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.

Official Rust implementation of Apache Arrow

01Result

apache/arrow-rs ↗

apache/arrow-rs AI coding statistics: 9.8%

of 774 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
9.8% agent · top contributor 28.9%20 contributors
org-wide

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

76
agent commits
698
other considered commits
20
agent contributors
28.9%
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

76assisted
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

Agent-attributed commit share by month
MonthAgent shareConsidered commits
2026-023.8%52
2026-0310.4%67
2026-044%101
2026-056.7%75
2026-0613.7%102
2026-076.7%89
2026-0813.7%219
2026-0911.6%69

Peak month: 13.7%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic749.6%
GitHub CopilotGitHub20.3%

03Evidence

Inspect the matches

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

Matched commit samples

  • f224f451 on GitHubchore: Fix duplicated word typos in comments and docs (#11034)Claude Code
  • fbdbf936 on GitHubfix(parquet): do not cache an ALP preset built from an empty first page (#Claude Code
  • f9e02ba7 on GitHubperf(variant): resolve borrowed field names without searching the metadataClaude Code
  • 665462d5 on GitHuboptimize(parquet): Nested list batching child.write calls (#10085)GitHub Copilot
  • 2e8e0c75 on GitHubSupport ListView/BinaryView/RunEndEncoded types in integration test JSON pGitHub Copilot

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 window858
Merge commits removed−0
CI / dependency bots removed−84
Considered774

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 →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 apache/arrow-rs

Scan another repository

Try