One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.
Assisted or autonomous
Assisted — a developer’s identity authored the commit and the agent added itself as co-author. The agent ran git commit during a working session, with a person there. Autonomous — a bot identity is the author, no human in the loop. Across the whole index, 93.7% of agent commits are assisted.
Agent share by month
Peak month: 41.7%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 15 | 22.1% |
| GitHub Copilot | GitHub | 2 | 2.9% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
0ce2b877Update llama.cpp to b10103 (c588c4f) (#1030)Claude Code5838c863Update llama.cpp to b10083 (846e991) (#1026)Claude Code3693f691Update llama.cpp to b10052 (b2dd28a) (#1021)Claude Code5e9b2194docs: Add docs for cli args and tools (#1037)GitHub Copilot92174c7aCPU / GPU fixes + harness for upstream ggml's test-backend-ops (#1004)GitHub Copilot
What was excluded
| Commits in window | 68 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −0 |
| Considered | 68 |
Bots are excluded from the denominator entirely. Counting dependabot as “AI-written code” is the fastest way to produce a meaningless number.
How this was measured
Measured over February–August 2026, cloned directly. Detection is deterministic string matching against signatures agents write about themselves — no heuristics, no style analysis. Merge commits and CI bots are excluded from the denominator. The figure is a floor: squash merges strip trailers, so real usage is higher. Contributor counts are aggregate — no individual is named.
Run it yourself: npx qmmit-cli mozilla-ai/llamafile