The GitHub Podcast TypeScript’s Takeover, AI’s Lift-Off: Inside the 2025 Octoverse Report
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Nov 4, 2025 Join Jeff Luszcz, data lead for GitHub's Octoverse report, as he dives into the rise of TypeScript over Python, driven by strong tooling and AI's influence. Discover how AI is transforming coding through vibe coding and scaffolding, alongside the surge of 180M developers on GitHub—over one new developer every second! Jeff discusses the unexpected comeback of COBOL and the staggering 1.12 billion open source contributions, highlighting the global growth of developers in India, Brazil, and Indonesia.
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TypeScript’s Momentum Explained
- TypeScript overtook Python on GitHub because strong typing and modern tooling fit long-lived, full-stack apps.
- AI and framework defaults (Next, Vite, scaffolds) accelerated TypeScript adoption.
AI Revives COBOL Maintenance
- Jeff recounts using LLMs to read and update legacy COBOL systems where original developers retired.
- AI helps fix vulnerabilities and add features to decades-old banking and government codebases.
Vibe Coding Lowers The Barrier
- Vibe coding and AI assistants let nontraditional learners prototype and ship software quickly.
- This lowers the barrier to entry and fuels massive new developer growth on GitHub.