On May 16, US time, OpenAI unveiled Codex, a sophisticated cloud-based intelligent agent designed for software engineering. This groundbreaking tool can manage multiple development tasks simultaneously, significantly boosting developers' productivity and efficiency in programming. The Codex interface boasts a clean design, comprising a straightforward input box and two intuitive buttons labeled "Ask" and "Code". Its capabilities extend beyond mere code generation; Codex can also comprehend code structures, respond to codebase-related inquiries, rectify bugs, and more. OpenAI has been leveraging Codex internally for various tasks, including code refactoring, test case generation, and error resolution, resulting in substantial improvements in development workflows. Furthermore, Codex supports reinforcement learning within real-world development environments, allowing it to produce code that more closely aligns with human coding conventions and review preferences.