Junie by JetBrains
Summary
Coding agents that look great on a demo repo will eat your token budget alive on a real migration — running in circles, re-reading files, making the same wrong assumption on every retry. Junie is JetBrains' answer to that problem: an agent that plans before it touches code and lets you redirect mid-task rather than waiting for a failed run to finish.
Junie runs inside JetBrains IDEs or as a standalone CLI, backed by whichever model you bring via API key — no markup on provider rates. The planning mode writes a structured plan to `.junie/plans` before executing, which you can edit, approve, or redirect; the plan files are committable, so the decision trail lives in your repo. Async execution means you can kick off a Spring Boot migration from your laptop and check the pull request from your phone. The ceiling appears when your codebase needs deep multi-repo context or your team relies on editors outside the JetBrains ecosystem — at that point Junie is not in the loop at all.
Bottom line: Junie earns its place on long-running, single-repo tasks like migrations and test coverage runs where its plan-then-execute model saves you from runaway token spend — but teams split across VS Code and JetBrains will find themselves maintaining two agent setups the moment non-JetBrains users need the same workflow.
Pricing Plans
Subscription- Free Tier
- 5 AI credits included
Free to Start
5 AI credits included
- Enough for a real task
- BYOK provider-rate pricing
AI Pro
10 AI Credits per 30 days
- AI-assisted coding and chat
- Option to try Junie
AI Ultimate
35 AI Credits per 30 days
- Higher cloud credit limit
- Recommended for frequent Junie use
View full pricing on junie.jetbrains.com →
Pricing may have changed since last verified. Check the official site for current plans.
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Pros
Sign in to edit- Plan-first execution mode writes a structured, committable plan before touching code, so you catch wrong assumptions before they consume a full token budget on a dead-end implementation.
- BYOK with zero provider markup, so your actual cost is whatever the model provider charges — no layer of platform pricing sitting between you and the API rate.
- Split-model planning lets you run the reasoning phase on a capable model and the implementation phase on a faster one, which means you avoid paying top-tier rates for repetitive file edits.
- Async CLI execution with web-based monitoring, so a long migration runs unattended and you review the resulting pull request when it suits you rather than babysitting a terminal.
- Persistent custom guidelines and Agent Skills packages shared across CLI and IDE, which means team coding standards and naming conventions follow Junie into every session without retraining per developer.
Cons
Sign in to edit- JetBrains IDE integration is the primary differentiator, and teams on VS Code, Neovim, or any other editor get CLI-only access — there is no plugin path for non-JetBrains environments. Teams split across editors end up running two separate agent setups, and the shared guidelines feature loses value when half the team is outside the ecosystem entirely.
- Async execution across multiple repositories compounds rather than reduces coordination overhead: the agent operates on a single repo at a time, so migrations that touch shared libraries and downstream services require you to orchestrate the sequencing manually, at which point the time savings shrink considerably.
- The free tier ships with a fixed credit allocation and BYOK; teams that need sustained daily agent use without managing their own API keys hit the credit ceiling and must move to a paid subscription — teams evaluating pure BYOK agents with no subscription path will find competitors more aligned with that model.
About
- Platforms
- Mac, Linux, Windows
- API Available
- No
- Self-Hosted
- Yes
- Last Updated
- 2026-08-16T05:34:01.438Z
Best For
Who it's for
- Developers wanting IDE and CLI integration
- Teams with custom coding standards
- Cost-conscious users mixing model tiers
- Asynchronous task execution and monitoring
What it does well
- Spring Boot upgrades and migrations
- Adding test coverage
- Running AI tasks from GitHub or GitLab issues/MRs
- Terminal-based coding workflows
Integrations
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Sign Up to ContributeFrequently Asked Questions
- Is Junie by JetBrains free?
- Junie by JetBrains has a permanent free tier alongside paid upgrades. You can keep using a baseline version indefinitely without paying.
- Is Junie by JetBrains open source?
- No — Junie by JetBrains is a closed-source tool. Source code is not publicly available.
- Can I self-host Junie by JetBrains?
- Yes. Junie by JetBrains supports self-hosting on your own infrastructure.
- What platforms does Junie by JetBrains support?
- Junie by JetBrains is available on: Mac, Linux, Windows.
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Agents that burn tokens on failed runs
Coding agents often run in circles on real migrations, re-reading files and repeating wrong assumptions on every retry. Junie counters this with a planning mode that writes a structured plan to .junie/plans before any code changes. The plan files are committable so the decision trail stays in the repo.
Core features
Junie runs inside JetBrains IDEs or as a standalone CLI. Users bring their own model via API key with no markup on provider rates. Split-model planning lets teams run reasoning on a capable model and implementation on a faster one. Async execution supports kicking off tasks such as Spring Boot migrations from a laptop and checking results later from a phone.
Use cases and limits
Supported tasks include Spring Boot upgrades and migrations, adding test coverage, running AI tasks from GitHub or GitLab issues, and terminal-based coding workflows. Pricing is subscription with 5 AI credits included in the free tier.
Strengths and trade-offs
The plan-first approach and zero provider markup keep costs close to raw API rates. Async CLI execution with web monitoring reduces wait time on long tasks. The main ceiling appears with deep multi-repo context or teams that rely on editors outside the JetBrains ecosystem, where CLI-only access applies and shared guidelines lose value.
Who it is for / who should skip it
Best for developers wanting IDE and CLI integration, teams with custom coding standards, cost-conscious users mixing model tiers, and asynchronous task execution and monitoring. Teams on VS Code or Neovim, or those needing multi-repo coordination, should skip it.