JetBrains AI Assistant is the AI coding layer built directly into JetBrains' own IDEs — IntelliJ IDEA, PyCharm, WebStorm, Rider, and the rest of the JetBrains family — rather than a separate extension you install into someone else's editor. It handles inline code completion, chat-based Q&A about your code, automated commit message generation, and code explanation, all using the deep static analysis JetBrains IDEs already perform.

It's built specifically for developers already using a JetBrains IDE day-to-day, since the AI features are woven into JetBrains' existing code intelligence (refactoring tools, inspections, navigation) rather than layered on top as a separate panel. That tight integration is the main reason to pick it over a general-purpose assistant if you're already a committed JetBrains user.

A free tier is included with JetBrains IDE subscriptions, covering basic completion and chat usage. A paid AI Pro add-on unlocks higher usage limits and access to more capable models for teams that need heavier daily use.