Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.
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: 63.3%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 263 | 26.9% |
| Claude Code | Anthropic | 12 | 1.2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
ad96a2dbNormalize editor module resolution across all build configs (#18801)GitHub Copilotf352504e[Native] Fix alpha-mode sentinel crash and report accurate caps and depth/GitHub Copilot766a47fcFix three IBL rendering bugs: AreaLights prefilter type, OpenPBR anisotropGitHub Copilot761bad3aGPU particles: re-bake gradient lookup textures in place for value edits (Claude Code07707990Feat: Stream Gaussian Splatting LOD as a part of a compound mesh (#18774)Claude Code5670e3a6fix(sandbox): apply persisted glTF loader options on page load (#18702)Claude Code
What was excluded
| Commits in window | 992 |
| Merge commits removed | −9 |
| CI / dependency bots removed | −4 |
| Considered | 979 |
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 babylonjs/Babylon.js