The JetBrains Blog

This October, we’re launching a new challenge for the JetBrains Academy community. To take part, complete our Build a Game With an AI Coding Agent course, customize the game with your own ideas, and submit your project for a chance to win prizes. How to participate Joining the challenge is simple: You can add new […]

A user reports that the IDE stopped responding, and your plugin is the prime suspect. You try the same steps, but everything works. Without more details, such as a thread dump captured during the freeze, it’s hard to know where to start. JetBrains Marketplace now gives plugin authors access to UI freeze reports attributed to […]

Trained with reinforcement learning in real environments, Mellum2.1 is built for coding agents and fast sub-agents that run on your own hardware. Today, we’re releasing Mellum2.1, the next version of the 12B mixture-of-experts model we open-sourced in June. The architecture hasn’t changed since version 2: it’s still a compact, fast model with 2.5B active parameters, […]

This post was adapted from Kai Schmithuesen’s talk at JetBrains Game Development Day 2026. See the full video presentation and Q&A below, or keep reading! First we are going to define what we mean by code quality then have a look at how this impacts business outcomes, where AI comes in, AI’s impact on quality […]

CI/CD remains one of the foundations of modern software development. According to the JetBrains Developer Ecosystem Survey 2026, 83.4% of respondents who use DevOps practices run CI/CD pipelines. The new report looks at how teams are running those pipelines, which tools they use, and where AI fits into their workflows. It brings together findings from […]