Jul–Sep 2026 · 10 repositories · updated 2026-10-25 · data
In Jul–Sep 2026, the median project among 10 Apache projects had 5.7% of its commits name an AI coding assistant; the highest was Apache Spark, at 66.4%. 10 of 10 named one at least once.
| # | Repository | Jul–Sep 2026 | Apr–Jun 2026 | Commits (12 mo) | Active authors (12 mo) | Health | Named most |
|---|---|---|---|---|---|---|---|
| 1 | Apache Spark | 66.4% | 59.3% | 4,798 | 426 | steady | Claude, Codex |
| 2 | Apache Superset | 38.1% | 37.9% | 6,026 | 470 | peak | Claude, GitHub Copilot |
| 3 | Apache Flink | 22.7% | 9.8% | 1,454 | 171 | steady | Claude, ChatGPT |
| 4 | Apache Iceberg | 9.3% | 7.5% | 1,861 | 274 | peak | Claude, Codex |
| 5 | Apache Airflow | 6.1% | 4.2% | 8,525 | 906 | surge | Claude, GitHub Copilot |
| 6 | Apache Kafka | 5.3% | 1.9% | 1,992 | 255 | steady | Claude, GitHub Copilot |
| 7 | Apache Cassandra | 5.1% | 1.1% | 1,002 | 90 | steady | Claude, Codex |
| 8 | Apache Arrow | 4.8% | 3.0% | 1,347 | 220 | steady | GitHub Copilot, Claude |
| 9 | Apache Beam | 2.3% | 3.2% | 2,685 | 217 | steady | Gemini, Claude |
| 10 | Apache Pulsar | 1.7% | 1.2% | 1,474 | 130 | steady | Claude, GitHub Copilot |
The share of each quarter’s commits that name an AI coding assistant: as their author, as a co-author, or in the line it signs with. A lower bound: an assistant that leaves no mark is not counted. Commits and active authors are those of the last 12 months; health is the project's pace of the last year.
Co-authored-by: line names an assistant, as Claude Code, Copilot, Cursor, Codex, Aider and others add when they commit for a person. A review bot whose suggestion was applied is named the same way.Assisted-by: or Generated-by: line names an assistant.Accounts and addresses are matched, not first names: a person called Claude, Devin or Jules is not an assistant.
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