OCTOVERSE: A NEW DEVELOPER JOINS GITHUB EVERY SECOND AS AI LEADS TYPESCRIPT TO #1

Summary from the TLDR Dev newsletter

GitHub experienced record growth in 2025, adding over 36 million new developers (more than one per second on average) to reach 180+ million total developers, largely driven by the release of GitHub Copilot Free in late 2024. For the first time in over a decade, TypeScript overtook both Python and JavaScript to become the most-used language on GitHub, showing how AI-assisted development is influencing developers' tool choices toward more reliable, typed languages.