JetBrains Junie

JetBrains Junie is an AI coding agent for JetBrains IDEs, terminals, and automated workflows. It suits developers who want to delegate coding tasks while retaining control over plans and consequential actions. Its broad workflow options are compelling, but limited subscription credits and a Windows sandbox gap may rule it out for some teams.

Overview

Junie combines chat assistance, agent mode, codebase indexing, and terminal access. It runs as a plugin in supported JetBrains IDEs, as a CLI on Linux, macOS, and Windows, and headlessly in CI/CD scripts. Remote Control also lets users run CLI tasks asynchronously and monitor them through a web app. This is a flexible setup for developers working across editor and automation workflows; it is less attractive if a Windows CLI sandbox is essential.

Key features

Plan before delegating

Advanced Plan Mode organizes a task into requirements, design, and delivery stages before editing begins. Users can revise plans and commit them in .junie/plans, which gives a team a reviewable record of the intended approach. Junie also asks users to approve key actions. In the CLI, sensitive actions require approval unless brave mode is enabled or the action is allowed. These safeguards suit developers who want an agent to take on substantial work without making every decision opaque.

Model and project flexibility

Junie supports models from OpenAI, Anthropic, Google, and xAI. Its CLI can use provider API keys directly; Junie Lite / BYOK supports any AI model, including locally running models, with AI usage billed separately by the provider. Persistent project guidelines and Agent Skills packages can shape how the agent works, while shared slash commands keep CLI and IDE workflows aligned through ACP. The range is useful for teams with existing model preferences, though BYOK means managing provider costs outside Junie's subscription.

Automation and sandbox boundaries

Junie can start tasks from GitHub issues and pull requests through a GitHub Action, or run AI tasks from GitLab issues and merge requests through GitLab CI/CD. CLI sandbox mode is available on macOS and Linux, but not Windows. Even on supported systems, it wraps terminal commands rather than Junie's file edits, MCP servers, hooks, or git operations, so it should not be treated as a complete boundary around every agent action.

Pricing

Junie has a free tier and paid subscriptions billed per user. The free options reduce the cost of trying the workflow, but their terms differ: one uses a small credit allowance with separately billed AI usage, while the other is built around provider keys or local models.

AI Pro is the entry paid tier for individual developers who want a recurring credit allowance and the option to top up. AI Ultimate supplies more than three times as many credits per 30 days for heavier use, but still has a defined allowance. Free to Start is a modest trial of the workflow, not an uncapped AI plan. Junie Lite / BYOK avoids a Junie subscription charge for model usage, but shifts that usage cost to the provider; its included free model offers another way to start. A 30-day trial is also available.

Platforms

The IDE plugin is available in IntelliJ IDEA Ultimate and Community, PyCharm Pro, WebStorm, GoLand, PhpStorm, RubyMine, RustRover, CLion, Rider, and Android Studio; supported versions vary by product. The CLI runs on Linux, macOS, and Windows, and Junie also supports web-based monitoring through Remote Control. Windows users should note that CLI sandbox mode is not supported.

Who it's for

Junie is best suited to developers already working in JetBrains IDEs who want an agent that can move between the editor, terminal, and CI/CD. Its plans, approvals, guidelines, and model choice make it a stronger fit for users who value steerability and project-specific conventions. Developers who want a Windows CLI sandbox, or who need more predictable costs than a credit allowance plus possible provider billing, should compare alternatives before committing.

Pros and cons

• Pros: Planning stages and approval controls let users inspect and steer work before sensitive actions proceed.
• Pros: IDE, CLI, and CI/CD access support workflows beyond an editor-only assistant.
• Pros: Multiple model providers, BYOK, and local-model support offer meaningful choice over how AI usage is supplied.
• Cons: Subscription plans have fixed credit allowances, so heavier use may require top-ups or a more expensive tier.
• Cons: Free-to-start AI usage is billed separately, and BYOK also leaves model costs with the provider.
• Cons: Windows users cannot use CLI sandbox mode, and the sandbox on other systems does not cover every Junie operation.

Alternatives

GitHub Copilot is another freemium coding assistant with a free plan and support across desktop, mobile, web, and extension platforms; consider it if that broader platform mix better matches your workflow.

Claude Code has a paid plan starting at $17 a month with an annual-subscription discount; choose it if that subscription model and its supported platforms better suit your needs.

Devin offers a free tier and a Pro plan at $20 a month for one member; it may suit readers comparing a separately priced agent option.

Gemini CLI provides free access with a Google Account for exploring its CLI; consider it if a free CLI starting point is the priority.

Aider is a free, open-source AI pair-programming tool, though LLM provider usage may cost extra; choose it if open-source pairing is the better fit.

Kilo Code offers free extensions for VS Code, JetBrains, and CLI, with usage billed separately; consider it if you want those editor choices and a separate usage model.

Tencent CodeBuddy and Tongyi Lingma are also freemium coding tools to compare.

Browse more options in AI Coding Assistants and AI Code Generators.

Verdict

Choose Junie if you work in JetBrains tools and want a coding agent that combines structured planning, approvals, model choice, and routes into terminals and CI/CD. Its strongest case is control across a broad workflow; its main drawbacks are bounded credits and the missing Windows CLI sandbox. If either cost predictability or Windows isolation is central to your decision, compare alternatives first.