HOW OPENAI CODEX WORKS

Summary from the TLDR newsletter

OpenAI Codex is a coding agent that can write features, fix bugs, answer questions about codebases, and propose pull requests. Each task runs in its own isolated cloud sandbox, and users can assign multiple tasks in parallel while monitoring progress in real time. The system has three layers: the agent loop, prompt and context management, and the multisurface architecture that lets one agent serve many different interfaces. Understanding how the system works helps users work more effectively.