JetBrains s.r.o, maker of software development tools for software development engineers, today announced the public launch of Junie, the company’s artificial intelligence agent that can automate coding tasks.

Junie was introduced by JetBrains in early access to a select number of participants in late January. Using the AI agent, a developer can use its agentic capabilities to delegate routine tasks such as generating repetitive code blocks, completing sets of functions, running tests as needed and reviewing code results with the developer.

Agents are a type of AI software capable of breaking down complex problems into steps and completing them with little or no human oversight. JetBrains already offers an AI Assistant, which is capable of providing code samples and question-and-answer assistance, but Junie can take it a step further by solving complex problems step-by-step at a feature or project level.

Developers may delegate a task to Junie by providing a project goal to the agent in conversational English or collaborate with it in a back in forth in their software editor. Junie can explore writing and refactoring a project with a developer, will act as a coding partner, assist with testing and debugging, generate optimized code and review modifications while also summarizing best practices.

JetBrains said Junie is intended to improve code quality and get more done faster so developers can spend more time reviewing more complex issues and stay focused on the big picture. It’s compatible with JetBrains’ independent development environments, or IDEs, which are applications that combine tools for editing code, testing and comping software. The agent is currently available in IntelliJ IDEA Ultimate, PyCharm Professional, WebStorm and GoLand. The company said support for PhpStorm, RustRover and RubyMine will come soon.

Junie and the AI Assistant complement each other and are useful in different situations. Junie is like a junior software engineer that will go heads down and do complex long-form work. The AI Assistant is an always-on expert aware of the codebase, able to explain code, provide samples, in-line code completion and help with quick research.

In addition to the launch release of Junie, JetBrains also announced major upgrades to the AI Assistant. The new version of the Assistant includes improvements designed to help developers improve their coding process with improved code completion and greater context awareness for more accurate suggestions.

Assistant also comes with more AI model options, including support for newer models including OpenAI’s GPT-4.5, Anthropic’s Claude 3.7 Sonnet and Google LLC’s Gemini 2.5 Pro. It also improves local model integration for developers who need greater privacy and control. It has also been updated to provide with “smarter support across the entire workflow, from code generation and testing to documentation and debugging.”

AI tools now available under a single subscription with a free tier

JetBrains said it’s changing its subscription model so all developers can access its AI tools, including the newly launched Junie AI agent and updated AI Assistant, with all its IDE licenses.

The company said that beginning with the 2025.1 versions, a JetBrains AI free tier will be available for all IDE licenses. The AI free tier will provide unlimited code completion and access to local AI models. Users will also receive credit-based use of cloud-based AI assistance from Junie.

Paid subscriptions — AI Pro and AI Ultimate — will provide increased credit quotas and the company’s more comprehensive subscription tiers such as its All Products Pack and dotUltimate subscriptions will now come with AI Pro included.

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