A small group is using agents. Adoption has spread beyond one person but is not project-wide.
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: 92.3%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 12 | 15.8% |
| Claude Code | Anthropic | 2 | 2.6% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
6050e839Add Gradio demo setup guideGitHub Copilotc766f12edocs: add Vibing download linksGitHub Copilot8f133837docs: add Vibing demo video to news sectionGitHub Copilot7f77b23afix: correct speech_tok_compress_ratio default value in VibeVoiceASRProcesClaude Code7e73beecAdd news about VibeVoice ASR Transformers integrationClaude Code
What was excluded
| Commits in window | 88 |
| Merge commits removed | −12 |
| CI / dependency bots removed | −0 |
| Considered | 76 |
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 microsoft/VibeVoice