IntelliJ IDEA 2026.1 release notes

IntelliJ IDEA 2026.1 is now out! The highlights of this release include: Any agent, built-in:

ACP Registry: Browse and install AI agents in one click.
Git worktrees: Work in parallel branches and hand one off to an agent while you keep moving in another.
Database access for AI agents: Let Codex or Claude Agent query and modify your data sources natively. Intelligence in the platform:
Quota-free next edit suggestions: Propagate changes throughout a given file with IDE-driven assistance.
Spring runtime insight: Inspect injected beans, endpoint security, and property values without pausing execution.
Kotlin-aware JPA: Detect and fix Kotlin-specific pitfalls in Jakarta Persistence entities. First-class language support:
Java 26: Enjoy day-one support, including preview features.
Kotlin 2.3.20: Enjoy day-one support, including experimental features.
C/C++ in IntelliJ IDEA: Access first-class C/C++ coding assistance for multi-language projects.
Support for JavaScript without an Ultimate subscription. Productivity and environment:
Expanded command completion, now with AI actions, postfix templates, and config file support.
Better performance for large-scale TypeScript projects.
Native Dev Container workflow: Open containerized projects as if they were local. Visit our What's New page to learn about these and other improvements.