AI Agents Capture 40% of GitHub Pull Requests in Six Months, Infrastructure Expands by 4 Million Cores to Handle Explosive Growth
GitHub's 2026 Octoverse report shows that AI agents initiated more than 40% of pull requests in September 2026, up from 17% just six months earlier, forcing major infrastructure expansion. The report also highlights rising multi-model use, changes in the developer role, and unresolved questions about code quality and review standards.