Monica Code is an AI coding assistant integrated into VS Code, supporting GPT-4o and Claude 3.5 Sonnet. It offers code completion, code editing, and multimodal dialogue with codebases, aiming to enhance developers' coding efficiency and quality. According to product background information, Monica Code supports over 20 programming languages, including C++, Go, Java, JavaScript, and Python, making it suitable for developers who need AI assistance in programming. Pricing options include a free version and a paid version with additional features and query allowances.