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November 28, 2025
Advent of Code 2025: A Kotlin Playground
Join us live for five days of Advent of Code puzzles and five Kotlin livestreams on December 1–5. Solve the puzzles in Kotlin with help from Kotlin team experts and fun community guests, climb the leaderboard, learn new tricks, and have a chance to win some prizes along the way! Here’s what we have planned […]
November 26, 2025
Kodee’s Kotlin Roundup: Too Much News to Keep Quiet About
I’ve gathered the latest Kotlin highlights for you – from the Kotlin Reddit AMA and documentation updates to learning programs and Google Summer of Code 2025 projects. Whether you’re here to stay up to date or just looking for something interesting to explore, there’s plenty to dive into. Where You Can Learn More YouTube Highlights
November 26, 2025
Building AI Agents in Kotlin – Part 2: A Deeper Dive Into Tools
In the previous article, we saw how to build a basic coding agent with list, read, write, and edit capabilities. Today, we’ll dive into how to extend the agents’ capabilities by creating additional tools within the Koog framework. As an example, we’ll be building an ExecuteShellCommandTool, teaching our agent to run code and close the […]
November 24, 2025
The Ultimate KMP Watchlist: Level Up Your Skills in 10 Talks
The best way to skip the “beginner mistakes” phase is to learn from the teams who have already solved them at scale. For Week 3 of KMP Level Up, we’ve curated the Top 10 KotlinConf talks that cover the full spectrum of adoption, from massive production case studies to deep dives into the compiler. Whether […]
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
