Top Programming Languages of 2025
This surge in activity coincides with a structural milestone: for the first time, TypeScript overtook both Python and JavaScript in August 2025 to become the most used language on GitHub, reflecting how developers are reshaping their toolkits. This marks the most significant language shift in more than a decade.
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Generative AI is now standard in development. More than 1.1 million public repositories now use an LLM SDK with 693,867 of these projects created in just the past 12 months alone (+178% YoY, Aug ’25 vs. Aug ’24). Developers also merged a record 518.7M pull requests (+29% YoY). Moreover, AI adoption starts quickly: 80% of new developers on GitHub use Copilot in their first week.
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TypeScript is now the most used language on GitHub. […] Its rise illustrates how developers are shifting toward typed languages that make agent-assisted coding more reliable in production. It doesn’t hurt that nearly every major frontend framework now scaffolds with TypeScript by default. Even still, Python remains dominant for AI and data science workloads, while the JavaScript/TypeScript ecosystem still accounts for more overall activity than Python alone.
Java is #4 and C# is #5.
Previously:
- What Xcode 26’s AI Chat Integration Is Missing
- Swift Assist, Part Deux
- Tim, Don’t Kill My Vibe
- Rewriting the TypeScript Compiler in Go
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Where is Swift? And can it even be listed reliably considering all the published Swift code that is just broken due to the language “evolution”?
The top languages are almost entirely:
- Platform independent
- Have large ecosystems of packages/frameworks/libraries
- Compose well with LLMs
Apple lost a decade hyperfocused on Swift while everyone else won devs.
Sanity checks:
- 2025 December TIOBE index: Swift doesn't even crack the top 20.
- 2025 Stack Overflow survey: Swift sits at 20 for most popular languages.
Everyone else is vibing, doing cross-plat, achieving velocity.
Swift is like "you *might* be able to write a quadratic equation and compile it in under 5 minutes *next year*". There's no future for it.
> Sanity checks:
- 2025 December TIOBE index: Swift doesn't even crack the top 20.
At its peak ObjC was #3. Objc will ultimately outlive Swift.
