Junie

Short Intro: Junie is an autonomous AI coding agent built by JetBrains, the Prague-based company behind IntelliJ IDEA, PyCharm, and WebStorm, with over 11 million paid IDE seats. The agent executes multi-step tasks inside JetBrains IDEs using the IDE's own static analysis engine, type system, and inspections rather than relying solely on LLM output. A CLI launched in March 2026 extended Junie to VS Code, Neovim, and CI/CD pipelines with bring-your-own-key pricing.

Key Capabilities:

• Autonomous task planning and execution across multiple files with test running and failure-driven revision loops

• IDE inspections and static analysis integration that applies JetBrains' built-in type system and code analysis to every change

• Test-first verification loop that runs tests after edits and revises until the project state is clean

• Code, Ask, and Think modes covering full autonomous execution, codebase Q&A, and deliberate planning before acting

• Multi-model selection covering GPT-5, Claude 4.5 Sonnet, and Gemini 2.5 Pro with cost and performance metrics per model

• Local model support through Ollama and LM Studio for privacy-sensitive workflows

• Junie CLI for terminal use across any editor or CI/CD environment with BYOK API key pricing

• MCP server support and Chrome DevTools integration for web development and debugging

• GitHub and GitLab version control integration within the IDE agent workflow

• Deep language support for Java, Kotlin, Python, PHP, Rust, and JavaScript with language-specific IDE tooling

• Change review panel for inspecting all proposed edits before applying them

See Junie pricing details →