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Hi, Kotlin fans! Kodee’s back with another roundup of the latest updates and stories from the Kotlin world. Grab your favorite drink, sit back, and enjoy!

What’s new in Kotlin

Kotlin roadmap update

We’ve updated our Kotlin roadmap! Head over to our Kotlin roadmap page to explore what we’ve accomplished since September 2024, our key objectives, and future plans. What’s more, during KotlinConf 2025, we’ll be sharing some interesting updates in these areas. I hope to see you there!

Check out the updated roadmap

Kotlin 2.1.20

Great news, friends – Kotlin 2.1.20 is here! This update brings powerful new features, performance boosts, and important bug fixes for Kotlin 2.1.0. Check out the latest blog post for all the details.

Explore Kotlin 2.1.20

Kotlin + AI

OpenAI vs. DeepSeek: which AI understands Kotlin better?

With all the hype surrounding AI, we’ve come up with an idea to test how different AI models understand Kotlin. JetBrains Research tested DeepSeek-R1, OpenAI o1, and OpenAI o3-mini, using KotlinHumanEval and a new benchmark designed for Kotlin-related questions.

See the results

Kotlin Multiplatform updates

Hot Reload for Compose Multiplatform

Our team is working on Hot Reload for Compose Multiplatform! It works like a charm – you tweak your UI and you instantly see the changes. No more waiting or “Did I break it?” moments (okay, maybe just fewer of them). You instantly see and “feel” the changes you make as you tweak your app! Want to see it in action? Check out this quick video by Sebastian Aigner. And if you’re ready to bring this superpower to your own project, just head over to its GitHub repository and follow the steps in the README.

Give it a try!

Compose Multiplatform 1.8.0-beta01

Compose Multiplatform 1.8.0-beta01 is out! The highlights of this release include: variable fonts, drag-and-drop on iOS, improved accessibility on iOS, resource preloading for web targets, and integration with browser navigation controls. Try it out and share your experience, feedback, and questions with us in a dedicated #compose channel on the Kotlin Slack.

What’s new in Compose Multiplatform

Kotlin for Server-Side Development

Shout-out to Kotlin for server-side content creators

Let’s introduce the latest picks from the community whose content about Kotlin for server-side development stood out!
📖 [Article] From Java to Kotlin – a practical example of how to convert code by Paul Newport
🎥 [Video series] Ktor Server Fundamentals by Akash Kamati
💻 [Project] Kotlin WoT & Agent ReaCtor (ARC) Framework by Robert Winkler
Check out all the recent content in our blog post and share your own!

Explore

KotlinConf 2025

The KotlinConf 2025 schedule is live!

The KotlinConf 2025 schedule is already available on our website. I don’t know about you, but I can’t wait to hear all about Kotlin and Spring for modern server-side development, how Google is deploying KMP Google Workspace, Compose Hot Reload, building AI agents in Kotlin, real-world insights from companies using KMP, and much more. Get ready to hear from industry experts who’ll explore the latest in Kotlin and beyond! Hope to see you there May 21–23!

Browse the schedule

Kotlin Foundation

Google Summer of Code 2025

The Kotlin Foundation is back for Google Summer of Code! This year, even more projects from JetBrains, Google, Uber, and Gradle are joining in, giving contributors a chance to work on open-source Kotlin projects with top industry mentors. Ready to code and make an impact?

Learn more

The Kotlin Foundation Annual Report 2024

The latest annual report is out, highlighting key initiatives and milestones from the past year. From the Kotlin Multiplatform Student Contest to the Grants Program and our continued participation in Google Summer of Code, we’ve been working together to grow and support the Kotlin ecosystem.

See the full report

Kotlin YouTube Spotlight

Check out our latest YouTube videos and Shorts – sit back, relax, and enjoy!

• Building MCP With Kotlin: Claude Desktop Controls My Smart Home Lights! | Sebastian Aigner
• Building KMP Libraries: The RevenueCat Story | Talking Kotlin
• Hot Reload for Compose Multiplatform | Sebastian Aigner
• Hacking Video Games With Kotlin | Ignat Beresnev