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.

High-performance C++ library for multiphysics and multibody dynamics simulations

01Result

projectchrono/chrono ↗

projectchrono/chrono AI coding statistics: 7%

of 880 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
7% agent · top contributor 37.1%11 contributors
org-wide

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

62
agent commits
818
other considered commits
11
agent contributors
37.1%
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

62assisted
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
2026-020%115
2026-030%164
2026-042.7%113
2026-050%101
2026-061.1%90
2026-0721.5%93
2026-0810.5%95
2026-0925.7%109

Peak month: 25.7%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic616.9%
GitHub CopilotGitHub10.1%

03Evidence

Inspect the matches

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

Matched commit samples

  • cdbc5d87 on GitHubmacOS: stop discarding unwind tables, which made every throw an abortClaude Code
  • 8c138775 on GitHubUpdate preCICE sphere_drop configuration to couple without a force lagClaude Code
  • e2fa28c6 on GitHubChrono::preCICE: let the TDPF participant supply dynamic added massClaude Code
  • 92fd4c7c on GitHubEnable VSG in conda package, release conda package for arm64 linux (#732)GitHub 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 window954
Merge commits removed−74
CI / dependency bots removed−0
Considered880

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 →C++ AI coding statisticsCompare evidence across C++ 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 projectchrono/chrono

Scan another repository

Try