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: 29.6%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 78 | 11.2% |
| GitHub Copilot | GitHub | 3 | 0.4% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
1f7be81fdocs: fix two docstrings that reference names the code does not have (#147Claude Codeebe93ee5agent doc: add a requirement for PR communications (#14709)Claude Code7643c482ModularPipeline.save_pretrained: change the default `overwrite_modular_inClaude Code360bef80Feat -- Stable Audio 3 (#14119)GitHub Copilot07a63e19[CI] Potential fix for code scanning alert no. 2150: Workflow does not conGitHub Copilot8ea908f3[CI] Add Workflow permissions to PR tests (#13233)GitHub Copilot
What was excluded
| Commits in window | 705 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −6 |
| Considered | 699 |
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 huggingface/diffusers