JetBrains AI Assistant is an AI tool embedded in JetBrains IDEs, providing developers with functions such as code generation, completion, refactoring, and commit message generation. It deeply integrates with large language models like OpenAI and Google Vertex AI, automatically analyzing code context and project structure to provide personalized suggestions. Key features include: code completion, refactoring suggestions, document generation, and commit message generation. It covers the entire development process, significantly boosting development efficiency.