JetBrains AI

In a short series of posts, we will tell you about four recent graduates who were part of our AI for Software Engineering (AI4SE) research partnership with Delft University of Technology (TU Delft). Having recently completed their MSc thesis work as interns here at JetBrains, they are now starting full-time positions with us. The first post will introduce you to them and their experiences at JetBrains so far, and the second will go deeper into their experiences and new roles.

Featuring Langfuse and W&B Weave Support, Ktor Integration, Native Structured Output, iOS Target, GPT-5, and More. Koog 0.3.0 was about making agents smarter and persistent. Koog 0.4.0 is about making them observable, seamlessly deployable in your stack, and more predictable in their outputs …

With the latest release of JetBrains AI Assistant, we've introduced a long-awaited feature – next edit suggestions, now available in Beta across JetBrains IDEs for Java, Kotlin, and Python.

Starting August 25, 2025, we’re rolling out a new AI quota model that makes AI subscriptions easier to understand and manage, while also letting you seamlessly extend your usage beyond your included quota .

Higher code quality and more predictable results – delivered to professional developers by JetBrains.

While developing a website or an app, you’ll encounter loads of technical challenges that need to be solved – from how to code the functionality to how to host it. Delivering even a simple to-do app requires a hefty technology stack, a team of professionals, and hours of testing and maintenance. Thi…

JetBrains AI Assistant just got a major upgrade, giving you smarter completions, better project understanding, and more control over how AI works in your IDE.

This summer, we're making Mellum, our code completion model, easier for developers to use locally, and we’re introducing support for more languages than ever.

AI agents are already in your tools—now it’s time to understand them. Learn to build and work with them responsibly in this free course by JetBrains and Nebius.

In online learning environments, tasks can often stump students, which can be challenging to navigate since teachers can’t always be there to help. Our Education Research team develops innovative features for education tools and recently built a smart AI-based hints tool that provides personalized feedback for students who might need help solving tasks. This AI tool goes beyond the automated hints common in massive open online courses (MOOCs) and delivers tailored, effective guidance that helps students move forward.

I was testing my agent built on Koog, JetBrains' open-source framework for building AI agents in Kotlin. I fed it a task from SWE-bench-Verified, a real-world GitHub issue that tests whether AI can actually write code. For the first 100 messages, everything looked promising. The agent methodicall…