Junie is JetBrains' terminal coding agent, and HagiCode is a desktop and web workbench that runs Junie as its executor. Stay with Junie alone for terminal, IDE and CI work; add HagiCode when you want parallel sessions, spec proposals and managed commits around it.
Junie is JetBrains' agentic coding tool: you run junie in a project directory and give it tasks in a terminal UI. HagiCode is a desktop and web AI programming workbench that drives agent CLIs, Junie among them, as its executor. It does not replace Junie. Junie still does the coding, and HagiCode adds sessions, proposals and commit handling around it.
If you work in a terminal, a JetBrains IDE or CI pipelines and one task at a time is enough, Junie alone is the simpler choice. If you juggle several tasks or repositories and want each change tied to a written proposal, HagiCode is worth adding on top. HagiCode does not sell models; Junie keeps its own sign-in and billing.
JetBrains' LLM-agnostic coding agent for the terminal, IDE and CI
Workbench that runs agent CLIs, Junie included, as executors
Terminal UI on Linux, macOS and Windows; IDE plugin; GitHub Actions and GitLab CI
Desktop app (Windows, macOS, Linux), Docker Compose container, Microsoft Store edition
Billed through a JetBrains plan (free Junie Lite model, AI Pro, AI Ultimate credits), a Junie API key or your own keys; see JetBrains' pricing page
Desktop and Container free; Store edition free with optional one-time TurboEngine purchase; model cost stays with Junie
Default model, or BYOK: OpenAI, Anthropic, Google, xAI, OpenRouter, GitHub Copilot, custom endpoints (LiteLLM, Ollama, LM Studio)
Hosts no models; uses whatever Junie is signed in to; optional OmniRoute routing
One session per terminal or CI job; you coordinate parallel runs yourself
Several sessions at once, each a named Agent with visible status
Plan mode writes a design document from read-only analysis
OpenSpec proposals: propose, validate, apply, archive (3 concurrent free, 32 with TurboEngine)
/review inspects changes in a Git repository; --review for CI
AI-composed commit messages with the repository locked during the commit; Git and GitHub integration
One install command, then sign in
Desktop install, plus Junie installed and signed in first
Developers who want a JetBrains-backed agent in terminal, IDE or CI
People running several agent tasks or repositories with traceable specs
Junie runs interactively in the terminal, as an IDE plugin, and headless in GitHub Actions and GitLab CI. A CI step can be as short as junie --auth="$JUNIE_API_KEY" "Fix any failing tests", or --review for a code review. You learn one tool and use it in all three places.
Junie signs in three ways: a JetBrains account, a Junie API key with usage-based billing, or your own keys from providers such as OpenAI, Anthropic, Google, xAI, OpenRouter and GitHub Copilot. Custom endpoints such as LiteLLM, Ollama and LM Studio also work. JetBrains states that BYOK usage is billed at provider rates with no markup, and effort levels are available for models that support them.
Brave mode has three levels: Off asks before sensitive actions, Auto approves commands classified as safe, On runs them without asking. Sandbox mode (Early Access) wraps terminal commands in an OS-level sandbox on macOS and Linux. Plan mode produces a design document from read-only analysis, and Debug mode works with a connected JetBrains IDE.
You can run another channel for a single launch, for example junie --eap or junie --nightly, without changing your installed default. JetBrains announced Junie as a beta in March 2026; current docs do not state a status, so check junie.jetbrains.com before relying on it for production CI.
--review or a headless task;HagiCode is a workbench on top of the CLI. It starts junie in ACP mode inside the repository you open, so your own Junie install and sign-in do the work. HagiCode has no Junie credential fields and adds no model billing.
Nothing is locked in: Junie stays a normal install that you can still run in any terminal.
curl -fsSL https://junie.jetbrains.com/install.sh | bash; Windows: the PowerShell installer on the Junie docs page), then run junie once and sign in.junie in the same directory; your Junie install and sign-in are untouched.Run several Junie sessions side by side, each with its own context, and see which Agent is running, waiting or finished. Without HagiCode that means several terminals you track yourself.
Each task can start as a proposal that Junie implements within agreed constraints. Plan mode gives you a design document inside one session; a proposal keeps the reasoning, discussion and code changes together and archivable across sessions.
HagiCode drafts the commit message from your diff and locks the repository while committing. The embedded Code Server lets you open the file Junie edited and adjust it without leaving the workbench.
Monospecs declares sub-repositories in .hagicode/monospecs.yaml so Junie sees the whole change surface. Vault registers reference projects and notes once and injects them into new proposals.
OmniRoute can route model traffic centrally when Junie is configured to use it. Junie's tool calls appear in the same typed view as every other agent, and the optional TokenMonitor integration shows today's tokens and cost in the status bar.
The Junie itself runs on a JetBrains subscription plan (a free Junie Lite model is included with a JetBrains account), a usage-billed Junie API key, or your own provider keys billed at provider rates. See the pricing page at junie.jetbrains.com for current plans.
On macOS or Linux run `curl -fsSL https://junie.jetbrains.com/install.sh | bash`, then `cd` into your project and run `junie`. Windows uses a PowerShell installer listed on the Junie docs page; Homebrew and npm (`@jetbrains/junie`) are alternatives in the repository README.
Yes. Install and sign in to Junie first, then choose Junie as the Agent CLI in HagiCode. HagiCode runs it over ACP and never asks for Junie credentials.
No. HagiCode is a workbench around the CLI; Junie still writes the code, and you can run it directly at any time.
JetBrains announced Junie as a beta in March 2026. The current docs do not state a status, so check junie.jetbrains.com for the latest.
Use Junie alone for CI, terminal and IDE work on one task at a time. Add HagiCode when you run several tasks or repositories and want proposals, commits and Agents managed in one place.
Asistente de código con IA localizado, con privacidad reforzada y mayor eficiencia
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