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.

mimalloc is a compact general purpose allocator with excellent performance.

01Result

microsoft/mimalloc ↗

microsoft/mimalloc AI coding statistics: 0.5%

of 996 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
0.5% agent · top contributor 40%4 contributors
team

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

5
agent commits
991
other considered commits
4
agent contributors
40%
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

5assisted
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%20
2026-030%14
2026-040%271
2026-050%7
2026-060%25
2026-070%272
2026-080.4%263
2026-093.2%124

Peak month: 3.2%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic30.3%
GitHub CopilotGitHub20.2%

03Evidence

Inspect the matches

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

Matched commit samples

  • afa6c90d on GitHubset _mi_process_is_initialized before mi_process_setup_auto_thread_doneClaude Code
  • 2dcd92a5 on GitHub_mi_subproc: fall back to the main subproc when tld->subproc is not yet seClaude Code
  • de802667 on GitHubfix: bootstrap the library in mi_heap_new and mi_subproc_newClaude Code
  • 542a9666 on GitHubavoid re-visiting full pages in mi_page_queue_find_free_exGitHub Copilot
  • 6725ca93 on GitHubavoid re-visiting full pages in mi_page_queue_find_free_exGitHub 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 window1,229
Merge commits removed−230
CI / dependency bots removed−3
Considered996

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 →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 microsoft/mimalloc

Scan another repository

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