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IntelliJ IDEA 2026.1 brings a wide range of updates across AI tooling, Java, Kotlin, Spring, Gradle, and Kubernetes support. The AI Assistant now supports bring-your-own-key for providers like Anthropic and OpenAI, adds ACP agent protocol support (including Cursor), and introduces an experimental plugin with AI-powered commit grouping, activity recap, and inline code insights. Java 26 support is included with structured concurrency, lazy constants, virtual thread visualization in the debugger, and improved command completion. Kotlin gains support for Spring 7 dynamic bean registration DSL, JPA best-practice inspections, explicit backing fields, and unused return value warnings. Spring Debugger now shows bean injection info as inline hints without requiring breakpoints and supports remote debugging of Spring Boot apps in Docker containers. Flyway migration support is enhanced with autocomplete across JPA entities and migration scripts. Gradle best practices (Kotlin DSL preference, version updates, dependency hygiene) are now surfaced as inspections. Kubernetes onboarding is improved with a guided setup flow, port forwarding, and seamless remote debugging integration. Basic JavaScript and TypeScript support is now available for free in the unified distribution.

What's New In IntelliJ IDEA 2026.1

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