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Explore OpenAI's newly released Codex AI coding agent through a comprehensive 23-minute hands-on review and demonstration. Discover the stunning macOS interface and learn about the impressive multi-threaded workflow capabilities that allow simultaneous work across multiple projects. Experience the 40% speed improvement of GPT 5.2 Codex and understand how thread-based workflows enable efficient multitasking for developers. Examine the built-in Git work trees support that facilitates parallel AI-driven development processes. Learn about powerful automations that can scan commits for bugs, draft weekly notes, and summarize stand-up meetings. Understand how Skills and MCP server integrations extend Codex's functionality to work with tools like Notion and Sentry. Follow along as a complete Java 25 vending machine CLI application is built from scratch, including the implementation of JSpecify for null safety. Witness the code generation process, review the generated code quality, run tests, and see the application in action. Observe how AI-generated commit messages work and gain insights into how this tool might transform developer workflows with AI assistance.
