Pulse
2026-09-18-v3.0
Dataset
2026-09-18-v3.0
Ruleset
b2e8889c66f7
Scanned
2026-09-16
Window
February–September 15, 2026
Local to this browser

01Result

ruby/ruby ↗

ruby/ruby AI coding statistics: 21.9%

of 4,953 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
21.9% agent · top contributor 68.8%31 contributors
team

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

1,087
agent commits
3,866
other considered commits
31
agent contributors
68.8%
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

1070assisted
17autonomous

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
MonthAgent shareConsidered commits
2026-021.2%424
2026-0310.3%777
2026-0415.2%361
2026-0514.6%581
2026-0631.1%733
2026-0719.9%774
2026-0833.4%829
2026-0942.8%474

Peak month: 42.8%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic106621.5%
GitHub CopilotGitHub200.4%
OpenAI CodexOpenAI20%

03Evidence

Inspect the matches

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

Matched commit samples

  • 135e0f84 on GitHub[ruby/rubygems] Allow a bundler checksum before myrack in the empty CHECKSClaude Code
  • 8398a36c on GitHub[ruby/rubygems] Pend the dirs= unresolved deps test under Ruby::BoxClaude Code
  • 3f0bd4e9 on GitHub[ruby/rubygems] Stop resolving locally for empty CHECKSUMS entriesClaude Code
  • 762fa2fc on GitHubIncrease SYNTAX_SUGGEST_TIMEOUT for ppc64le/s390x from 10 to 60 secondsGitHub Copilot
  • d939495a on GitHubFix unused variable warning in thread_sched_set_running on non-DTrace platGitHub Copilot
  • 0db07b1a on GitHub[ruby/json] Avoid Float out of range warning for clearly underflowing numbGitHub Copilot
  • f20155d5 on GitHubmarshal.c: Make partial objects table conditionalOpenAI Codex
  • c34cc402 on GitHubYJIT: Fix local register mapping overflowOpenAI 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 window5,075
Merge commits removed−0
CI / dependency bots removed−122
Considered4,953

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
ruby/ruby
Default branch
master
Resolved HEAD
d38952c45e27becbe160f832aea823546899ad2e ↗
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.

CohortRuby · 14 eligible repositories · at least 100 considered commits2026-09-18-v3.0 · February–September 15, 2026 · 4 of 18 ecosystem repositories excluded
Agent-commit share position96th percentile

Midrank percentile; equal shares split the tied positions.

Repository
21.9%
Cohort median
1.7%
Share rank
1 / 14
0th50th100th

Percentile = (repositories below + half of 1 tied repository) ÷ 14.

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 →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 ruby/ruby

Scan another repository

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