If 2025 had a theme, it would be growth. Every second, more than one new developer on average joined GitHub—over 36 million in the past year. It’s our fastest absolute growth rate yet and 180 million-plus developers now work and build on GitHub. The release of GitHub Copilot Free in late 2024 coincided with a step-change in developer sign-ups, exceeding prior projections. Beyond bringing millions of new developers into the ecosystem, we saw record-level activity across repositories, pull request...