JetBrains Junie

Junie is an AI coding agent developed by JetBrains and integrated directly into JetBrains IDEs such as IntelliJ IDEA, PyCharm, WebStorm, and others. It is positioned as a smart coding agent that works within the IDE experience, leveraging deep code understanding to assist developers with complex tasks. A separate Junie CLI is also available for those who prefer terminal-based workflows.

What It Is

Junie is an agentic AI coding tool that operates inside JetBrains IDEs, going beyond simple code completion or chat assistance. Rather than just suggesting snippets, Junie is designed to autonomously plan and execute multi-step coding tasks — such as implementing features, writing tests, refactoring code, and fixing bugs — while staying embedded in the developer's existing IDE environment. It is part of JetBrains' broader AI product lineup, which also includes AI Assistant, the Mellum model, and the Air agent runner.

Where It Fits in the JetBrains AI Stack

JetBrains offers several AI-powered tools, and Junie occupies the agentic coding layer. According to the JetBrains website, the AI product family includes:

• AI Assistant – inline AI features within IDEs (completions, chat, explanations)
• Junie – a smart coding agent for JetBrains IDEs
• Air – a tool for running AI agents side by side in a unified workflow
• Mellum – JetBrains' own language model
• ACP – the Agent Communication Protocol

Junie is specifically the IDE-native agent experience, distinct from Air which targets parallel agent workflows.

IDE Integration and Deployment Model

Because Junie runs inside JetBrains IDEs, it has direct access to the full project context — including the file tree, build system, test runner, and version control — without requiring external tool connections. This tight integration means Junie can run tests, read compiler errors, and iterate on code in the same environment developers already use. The tool is accessed as part of the JetBrains IDE ecosystem rather than as a standalone application, and a CLI variant exists for command-line-oriented workflows.

Audience and Use Cases

Junie targets professional software developers who already use JetBrains IDEs and want an agent that can handle longer-horizon tasks autonomously. Typical use cases include implementing new features from a description, writing and running unit tests, performing refactors across multiple files, and resolving issues flagged by static analysis. The agent is designed to work across the languages and frameworks supported by JetBrains IDEs, covering Java, Kotlin, Python, JavaScript, TypeScript, C#, Go, PHP, and more.

Current Status

Junie is an active product listed prominently in JetBrains' AI tools navigation alongside AI Assistant, Air, ACP, and Mellum. It is available through the JetBrains product ecosystem and is part of JetBrains' ongoing investment in AI-powered developer tooling. JetBrains states that its tools adhere to SOC 2 certification standards, which applies to the broader product suite including AI offerings.