The upcoming IntelliJ IDEA 2024.1 comes with an optional K2 modeStarting from the 2024.1 EAP, IntelliJ IDEA comes with an optional K2 mode. In this mode the IDE uses the K2 compiler for faster and more robust Kotlin code analysis.

Kotlin is a modern programming language developed by JetBrains, designed to interoperate with Java and run on the Java Virtual Machine (JVM). With features like null safety, type inference, and extension functions, Kotlin offers a concise and expressive syntax for building robust and scalable applications. Developers can learn Kotlin's language features, explore its ecosystem of libraries and frameworks, and leverage Kotlin for developing Android apps, server-side applications, and multi-platform projects.

Kotlin

IntelliJ IDEA 2024.1 introduces K2 Kotlin Mode, which provides faster and more robust Kotlin code analysis. The K2 mode supports future Kotlin features, improves code analysis stability, enhances IDE performance, and offers improved API for third-party plugins. However, it does not support Kotlin Multiplatform projects, Android projects, and some minor features. To enable K2 mode, go to Settings | Languages & Frameworks | Kotlin and enable the K2-based Kotlin plugin.

K2 Kotlin Mode (Alpha) in IntelliJ IDEA