AI co-authored commits: 3 open-source projects in 2023, 686 of 874 in 2026

Borehole's analysis of 984 public projects finds that 686 of 874 projects had at least one commit declaring an AI agent as co-author in 2026, up from 3 of 839 in 2023, with the average share of AI-declared commits rising from under 1% in 2023 to 8.9% in 2026. Of the 984 projects, 249 state an AI policy and 737 have AI-declared commits, with 206 doing both; Claude appears in 655 projects and GitHub Copilot in 470. The report notes that no AI-declared commits does not mean no AI was used, since a declaration is a co-author line the contributor chose to keep and a rebase can remove it.