Latest news
October 23, 2025
Getting Started With Kotlin for Java Developers
Guest post by Urs Peter, Senior Software Engineer and JetBrains-certified Kotlin Trainer. For readers who’d like a more structured way to build Kotlin skills, Urs also leads the Kotlin Upskill Program at Xebia Academy. This post opens The Ultimate Guide to Successfully Adopting Kotlin in a Java-Dominated Environment, a series that follows how Kotlin adoption grows […]
October 22, 2025
From Python to Kotlin: A Transition Worth Making
This article was written by an external contributor. When it comes to writing short scripts or CRUDs, Python is a great choice. With its rich ecosystem and broad adoption, it can be easily used to scrape some data or to perform data analysis. However, maintaining a large codebase in Python can be very problematic. Python’s […]
October 17, 2025
Koog 0.5.0 Is Out: Smarter Tools, Persistent Agents, and Simplified Strategy Design
We recently released Koog 0.5.0, introducing full Agent2Agent (A2A) protocol support, which makes it easier than ever to build systems of interconnected AI agents in Kotlin. But A2A is just the beginning. Koog 0.5.0 brings a host of improvements that make agents more persistent, tools smarter, and strategy design more intuitive. Let’s dive into the […]
October 9, 2025
Build a Kotlin Multiplatform Project and Win a Trip to KotlinConf 2026
This year’s Kotlin Multiplatform Contest for students and recent graduates is open. Build a project using KMP, and it could take you to KotlinConf 2026 in Munich, Germany! Whether you are already exploring Kotlin Multiplatform or just curious about how far you can take shared Kotlin code, seize the chance to challenge yourself, stand out, […]
fun main() {
val name = "stranger" // Declare your first variable
println("Hi, $name!") // ...and use it!
print("Current count:")
for (i in 0..10) { // Loop over a range from 0 to 10
print(" $i")
}
}Kotlin in action
Share code on your terms and for different platforms
Kotlin + AI
JetBrains is investing in AI models tailored for Kotlin, providing open data, benchmarks, and AI-native tooling integrated into your workflow.
At the same time, Kotlin makes it easy to build your own AI-powered features with seamless backend integrations and a growing ecosystem.
What you get with Kotlin + AI
- Strong support across JetBrains AI tools like AI Assistant and Junie
- Robust functionality for building AI-powered apps on the JVM
- Native integration with tools like Spring AI and LangChain4j
- Open data and benchmarks for better code generation
Build your own AI agents with Koog
Koog is JetBrains’ new Kotlin-native framework for creating powerful AI agents that run locally, interact with tools, and automate complex tasks. Whether you’re developing a simple chat assistant or an advanced multi-step workflow, Koog gives you full control with clean Kotlin code – no external services are required. Build, extend, and experiment with AI agents entirely in Kotlin.
Get startedBig, friendly and helpful community
Kotlin Foundation
