Kotlin's Evolution and AI Adoption in 2026
How Kotlin expanded beyond mobile into backend and AI development
1Kotlin's 15-year maturity
In 2026, Kotlin celebrates fifteen years as a programming language, having built a mature ecosystem with worldwide company adoption. The language has established itself beyond initial expectations, with a large active developer community. This longevity provides perspective on lasting technology trends versus temporary fads in software development. The anniversary report examines Kotlin's evolution across different development domains.
2Beyond Android dominance
While Kotlin remains deeply established in Android development, more than half of Kotlin developers now work on backend projects. This marks a significant expansion from Kotlin's original mobile-first positioning. The language's versatility has allowed it to penetrate server-side development, challenging assumptions about its domain limitations. This backend adoption demonstrates Kotlin's growing role in full-stack development scenarios.
3Multiplatform expansion
Kotlin's multiplatform capabilities have gained traction, with developers using it across mobile, backend, and shared codebases. The language's design features like static typing and null safety prove valuable in complex, cross-platform scenarios. This expansion reflects the industry's need for solutions that reduce duplication across different target platforms while maintaining performance and type safety.
4AI adoption among developers
The report reveals 93% of surveyed Kotlin developers use at least one AI coding tool, with 81% using or planning to try AI coding agents. Notably, 81% find AI-generated Kotlin code fully correct or requiring only minor fixes. This high adoption rate positions Kotlin developers at the forefront of AI-assisted programming practices, leveraging the language's clarity and structure for effective AI collaboration.
5AI-era language features
Kotlin's static typing, null safety, and coroutines gain new relevance in AI-assisted development contexts. These features provide the structured foundation that AI tools require for generating reliable code. The language's conciseness and expressiveness make it particularly suitable for human-AI collaboration in coding workflows, suggesting Kotlin may be well-positioned for future AI-driven development paradigms.
6Developer community growth
The Kotlin community has matured along with the language, showing increased experience levels across various domains. This professionalization reflects Kotlin's transition from a promising new language to an established technology choice. The community's growth supports continued ecosystem development, with shared knowledge and best practices for backend, multiplatform, and AI-assisted use cases.
7Research methodology
The State of Kotlin 2026 report combines JetBrains research data with independent industry metrics and real-world adoption evidence. This multi-source approach provides both quantitative adoption metrics and qualitative insights into developer experiences. The methodology captures both expected trends and surprising findings that challenge conventional wisdom about Kotlin's role in modern software development.
8Future ecosystem directions
Kotlin's evolution points toward increasing diversification across platforms and development approaches. The language's growth isn't just quantitative but reflects expanding use cases from mobile to backend to AI collaboration. This trajectory suggests Kotlin will continue adapting to emerging development paradigms while maintaining its core strengths in type safety and developer productivity.
Original article: The JetBrains Blog — Kotlin's Evolution and AI Adoption in 2026