corso-codex

<div align="center"> <h1>OpenAI Codex - The Definitive Course</h1> <p><strong>April 2026 Edition - Updated to April 29, 2026</strong></p> <p>Definitive HTML course on OpenAI Codex, available in Italian and English.</p> </div> --- ## Choose Your Language - [English README](README.en.md) - [README Italiano](README.it.md) ## Course Files - [Italian course](openai_codex_corso_definitivo_it.html) - [English course](openai_codex_corso_definitivo_en.html) ## What This Repository Contains This repository intentionally contains only the public release files: - `README.md` - `README.it.md` - `README.en.md` - `openai_codex_corso_definitivo_it.html` - `openai_codex_corso_definitivo_en.html` No build step, local server, or extra dependency is required. Open the HTML file directly in a modern browser. ## Current Model Positioning The course reflects the April 29, 2026 model hierarchy used throughout the HTML files: - `GPT-5.5` for frontier Codex work, long-running tasks, architecture, Computer Use, and complex agentic coding. - `GPT-5.3-Codex` as the specialized Codex/API model for agentic coding workflows. - `GPT-5.4`, `GPT-5.4-mini`, and `GPT-5.4-nano` as cost/latency alternatives where appropriate. ## Scope The course covers Codex Desktop/App workflows, CLI, IDE usage, GitHub review, `codex-action`, AGENTS.md, sandbox and approval policies, MCP, skills, plugins, subagents, worktrees, enterprise governance, and master-level exercises. ## Author Christian Quintino De Luca Email: [INFO@RTHITALIA.COM](mailto:INFO@RTHITALIA.COM)