JetBrains

Kotlin now has its own public benchmark for AI coding agents 🚀

The Kotlin Benchmark ranks agents on 105 engineering tasks from open-source Kotlin repositories.

Compare agents by resolution rate, token cost, and latency, and dive into the methodology.

👉 kotl.in/benchmark-yt

22 hours ago | [YT] | 62

JetBrains

How is AI changing Java development? In the latest episode of The Marco Show, Martin Lippert (Spring Tools) shares how AI coding agents are changing developer workflows, whether IDEs still matter, and what the future of Java tooling could look like.

👉 Watch the episode and join the giveaway: https://youtu.be/gUm6DOf1NHI

5 days ago | [YT] | 102

JetBrains

Kotlin support is now available in BlueJ 6.0! 💙

BlueJ is one of the most established environments for teaching introductory object-oriented programming. With Kotlin support, students can keep BlueJ’s familiar objects-first workflow – visual class diagrams, the object bench, and direct object interaction – while writing clearer, more concise Kotlin code.

To help educators get started, we’ve prepared onboarding materials for teaching OOP with Kotlin in BlueJ, including explanations, examples, classroom projects, and practice materials that can be opened directly in BlueJ.

Download BlueJ 6.0 and get started with Kotlin
jb.gg/v2ncvm

1 week ago | [YT] | 123

JetBrains

Biggest culture shock after startup life:

2 weeks ago | [YT] | 30

JetBrains

The Kotlin Toolchain is your unified entry point into the Kotlin ecosystem.

With a single "kotlin" command, you can create, build, run, test, and publish your applications without upfront build-tool decisions or complex plugin wiring.

Version 0.11 is out now, introducing the first public preview of new publishing capabilities.

Read the blog post to see how it works and how to get started: kotl.in/ktc-011-yt

2 weeks ago | [YT] | 117

JetBrains

🎉 Kotlin turns 15 – celebrating fifteen years of helping developers write less code, reduce friction, and turn ideas into working software faster.

Discover the Kotlin Effect through everyday situations brought to life in our special anniversary video. Challenge yourself in the Kodee vs. Friction browser game, and take your Kotlin skills further with hands-on learning resources.

See how Kotlin supports developers and teams building for mobile, backend, web, and desktop.

Explore the Kotlin Effect 👇
kotl.in/tkgnz3

2 weeks ago | [YT] | 137

JetBrains

Building or maintaining an open-source multiplatform library for the Kotlin ecosystem? The Kotlin Foundation wants to help fund it.

Applications are open for the 2026 Kotlin Foundation Grant Program for Library Authors, with particular interest in Kotlin Multiplatform, AI, and LLM projects.
Grant recipients retain full ownership of their work.


📅 Apply by July 14, 2026.


Learn more and submit your project 👇
jb.gg/5gend6

2 weeks ago | [YT] | 61

JetBrains

Be honest.
What diagnosis would the Developer ER give to YOUR code right now?

2 weeks ago | [YT] | 3

JetBrains

Adopting Kotlin Multiplatform was a calculated bet for Booking.com’s experimentation library – and the results exceeded expectations.

Discover how KMP helped improve cross-platform consistency and proved to be a viable long-term solution for their team.

Read the full story
kotl.in/6821oj

3 weeks ago | [YT] | 135

JetBrains

🎉 Kotlin is turning 15 – and now is a great time to start learning.

To celebrate, we’re offering free access to select Kotlin courses on Hyperskill, so you can build your Kotlin knowledge with hands-on, project-based learning.

Start with the basics, build real projects, and continue on to professional Kotlin tracks.

Explore the Kotlin courses 👇
kotl.in/y2qhc7

3 weeks ago | [YT] | 155