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.

Apache DataFusion Comet Spark Accelerator

01Result

apache/datafusion-comet ↗

apache/datafusion-comet AI coding statistics: 6%

of 1,054 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
6% agent · top contributor 33.3%11 contributors
org-wide

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

63
agent commits
991
other considered commits
11
agent contributors
33.3%
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

63assisted
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
2026-010%1
2026-0215.8%95
2026-031%104
2026-042.9%139
2026-051.3%150
2026-063.8%131
2026-073.9%153
2026-085.7%123
2026-0914.6%158

Peak month: 15.8%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic524.9%
OpenAI CodexOpenAI90.9%
Cursor AgentAnysphere20.2%

03Evidence

Inspect the matches

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

Matched commit samples

  • 52c8323e on GitHubfix: render float and double Iceberg partition values like iceberg-java (#Claude Code
  • 481aefea on GitHubchore: drop support for JDK 11 (#5897)Claude Code
  • f69c4c81 on GitHubperf: batch the nested-element list hash for flat struct elements (#5778)Claude Code
  • cb36aa5f on GitHubchore(deps): bump opendal from 0.57.0 to 0.58.1 in /native (#5324)OpenAI Codex
  • cfd8f1fa on GitHubtest: cover ArrayExists three-valued logic config (#5000)OpenAI Codex
  • b6571d96 on GitHubfix: match Spark percentile interpolation precision (#4792)OpenAI Codex
  • 252b7c86 on GitHubtest: enable native path in lower/upper_enabled sql fixtures (#5619)Cursor Agent
  • 756ddd7e on GitHubfeat: Support Spark levenshtein expression in native execution (#4105)Cursor Agent

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 window1,137
Merge commits removed−0
CI / dependency bots removed−83
Considered1,054

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 →Cursor Agent commitsBrowse repositories with detected Cursor Agent 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 apache/datafusion-comet

Scan another repository

Try