OpenAI has released a major update to its Codex AI coding assistant, powered by GPT-5, enhancing its integration across developer tools and platforms. The update introduces a new integrated development environment (IDE) extension compatible with VS Code, Cursor, Windsurf, and similar editors, allowing developers to preview and edit code locally while seamlessly handing off tasks between local and cloud environments. Codex now supports code reviews directly on GitHub pull requests, enabling AI-assisted review and tagging. The Codex command-line interface (CLI) has been revamped with a better user interface, support for image inputs, message queuing, and agentic capabilities. Users can access these features through their ChatGPT subscription plans, including Plus, Pro, Team, Edu, and Enterprise. The update effectively turns Codex into a unified coding agent that operates across IDEs, terminals, cloud services, GitHub, and even mobile devices, all connected via the user's ChatGPT account. This comprehensive upgrade aims to streamline the development workflow by providing a consistent AI assistant experience across multiple environments.