JetBrains

• Context-aware AI-powered code completion

• In-IDE AI chat that understands project context

• Automatic inline documentation generation

• AI-guided refactoring suggestions with explanations

• Commit message generation based on staged changes

• Custom prompt library for personalized AI actions

• Support for JetBrains’ proprietary model (Mellum) and others

• Single subscription across IDEs with free tier support

• VS Code extension for cross-editor functionality

• Local and cloud model flexibility with usage quota control

JetBrains AI Assistant brings state-of-the-art AI into your development environment by embedding context-aware code completion, intelligent suggestions, and interactive chat directly into JetBrains IDEs. Launched publicly in December 2023, it extends JetBrains’ longstanding commitment to developer productivity by weaving AI seamlessly into your existing workflows.

This AI assistant goes beyond simple autocomplete—it understands your project’s language, dependencies, file relationships, and open files to deliver highly targeted responses to your coding tasks. Whether you’re asking questions in the AI chat, generating documentation, or seeking commit messages, you stay focused and efficient.

Refactoring gets smarter too. The AI highlights areas of improvement, offers suggestions, and explains the logic behind each improvement—all integrated into familiar context menus. You see changes as diffs before applying them, giving you full control.

Under the hood, JetBrains leverages its own high-performance model, Mellum, alongside trusted third-party AI models. This allows for a flexible experience—whether you prefer to use local models or cloud-based ones, JetBrains AI gives you options.

Licensing is both flexible and user-friendly. With the 2025.1 release, JetBrains introduced a free tier that includes unlimited code completion and local model access. Advanced AI features, including the new Junie coding agent, are available under a subscription.

If you also work in Visual Studio Code, you’ll appreciate the JetBrains AI Assistant extension—currently in public preview—which brings the same AI-powered chat, code completion, and AI agent capabilities to that editor too.

In summary, JetBrains AI Assistant empowers developers by delivering deeply integrated, flexible, and context-rich AI tools that enhance accuracy, speed, and confidence in coding without leaving your IDE.