Best of JetBrains — March 2026

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   Cursor AI Coding Assistant Now Available in JetBrains IDEs

   Cursor AI coding assistant is now available inside JetBrains IDEs (IntelliJ IDEA, PyCharm, WebStorm) via the Agent Client Protocol (ACP). The integration gives developers access to frontier models from OpenAI, Anthropic, Google, and Cursor, along with secure codebase indexing and semantic search. It is free for paid Cursor plan subscribers and requires JetBrains IDE version 2025.3.2 or later with the AI Assistant plugin. The move is part of JetBrains' open ecosystem strategy to avoid vendor lock-in by supporting multiple AI agents.

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   JetBrains Air is now in public preview: an IDE built around AI agents rather than the editor

   JetBrains has launched two AI-focused developer tools. Air is an agentic development environment (public preview, macOS only) built on the abandoned Fleet IDE codebase, designed to orchestrate multiple AI agents — including OpenAI Codex, Claude, Gemini, and JetBrains' own Junie — concurrently in isolated sessions. It uses the open Agent Client Protocol (ACP) for vendor-neutral agent communication and bundles terminal, Git, code navigation, and preview in one workspace. Junie CLI is a standalone, LLM-agnostic coding agent for terminals, IDEs, and CI/CD pipelines, supporting models from OpenAI, Anthropic, Google, and Grok via bring-your-own-key. It emphasizes codebase structural understanding to avoid what JetBrains calls 'Shadow Tech Debt,' and includes next-task prediction, MCP support, and one-click migration from Claude Code and Codex. Pricing starts at $10/month. JetBrains positions both tools as neutral infrastructure beneath existing agents rather than direct competitors.

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   IntelliJ IDEA 2025.3.4 is Out!

   IntelliJ IDEA 2025.3.4 has been released, bringing full support for Java 26 as the headline feature. The update also includes several bug fixes: a fix for HTTP requests accidentally triggering other requests in the same file, improved local changes refresh in large Perforce projects, and a correction for the Dependencies tab when using Analyze Cyclic Dependencies. The update is available via the IDE itself, Toolbox App, snaps, or direct download.

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