repository · survival report #5 · 2026-10-12 · method v4 · unranked

apache/spark

In Survival Report #5 (2026-10-12, method v4): 1,218 of 1,379 lines introduced by 19 AI-tagged commits are still at HEAD, 88.3 %. These are counts, not grades. No rank, no colour, no verdict, and no comparison with any other repository on this page. Every number links to the audit bytes behind it and the method and its limits are public.

GitHub · latest.json · badge.svg · Survival Report #5 · all repositories · Atom feed

19AI-tagged commits · of 48,842 1,379lines introduced by them 1,218still attributed to them at HEAD 88.3 %line-weighted 95.5 %median per commit 19 %of introduced lines in the largest commit

Baseline: this repository's untagged lines

Commits with no machine-readable AI signal, human-written, inline-completed or untagged-agent code alike: 48,813 commits, 14,937,705 lines introduced, 4,123,638 still at HEAD (27.6 % line-weighted, 54.5 % median per commit). Age is the time from a commit to HEAD. The baseline was added in method v3 and is unchanged later; definition at causari.dev/method.

Age-matched: AI-tagged lines 92.2 % against untagged lines in the matched age windows 84.7 %, a gap of +7.4 pts, over 1 age window holding 65 % of the AI-tagged lines.

Line ageAI-taggedcommitsUntaggedcommits
0–30 d—084.9 %367
30–90 d92.2 %1684.7 %1,030
90–180 d79.7 %277.3 %1,253
180–365 d82.4 %170.0 %2,092
365–730 d—068.6 %3,277
730+ d—021.8 %40,794

By agent, in Survival Report #5

Alphabetical. A commit is attributed to the agent its metadata names; one agent per commit. VERIFIED commits only.

AgentCommitsLines introducedStill at HEADLine-weightedCapped
claude-code348339281.2 %81.2 %
cursor1689682692.2 %92.2 %

History across reports

One row per report this repository was measured in, oldest first; each report measured HEAD as of its own date. The line is the line-weighted ratio on a fixed 0 – 100 % axis; each point is one report.

Line-weighted ratio across reports, 0 to 100 %: #2 85.6 %; #4 86.4 %; #5 88.3 %
ReportDateAI-tagged commitsLines introducedStill at HEADLine-weighted
Survival Report #22026-09-23211,6341,39985.6 %
Survival Report #42026-10-05211,6341,41286.4 %
Survival Report #52026-10-12191,3791,21888.3 %

Reproduce

One command, any machine, no account: the same bytes the report was built from. The exact bytes behind this page are repos/apache__spark.json of Survival Report #5. Open an issue with your JSON if it differs.

re audit apache/spark --json   # method v4, full clone

Badge

Text only, one colour, no red and no green. It follows the latest report and is cached for one hour. badge-dark.svg is the same badge as paper on ink.

AI code survival 88.3 % · causari · #5 AI code survival 88.3 % · causari · #5, paper on ink

README · Markdown
[![AI code survival](https://causari.dev/r/apache/spark/badge.svg)](https://causari.dev/r/apache/spark/)

Coverage

  • Method v4, causari 0.4.1. Detection from commit metadata only; survival from git blame -w -M -C at HEAD.
  • Full clone: yes. Method v4 refuses shallow clones; this row comes from a complete history.
  • Sample: 19 AI-tagged commits; the sample floor is 5. At or above the floor, so the ratio is aggregated into the report.
  • PROBABLE: 10 PROBABLE commits (2,642 lines introduced, 2,282 still at HEAD) are listed here and never summed into the VERIFIED counts.
  • Cap: 256 lines per commit in this repository; the capped ratio is 88.3 %.
  • .git-blame-ignore-revs: not present in this repository.