A Senior Engineer's Guide to Prompting AI for Real Code
If your idea of using AI for coding still involves tabbing twice to accept a generic boilerplate function, we need to talk. We’re way past the era of mere code completion. As of early 2026, OpenAI Codex (the technical foundation behind the coding models in Cursor, Copilot, and ChatGPT) has evolved from a sophisticated autocomplete into a semi-autonomous software engineering agent. That’s a big deal. A completion engine saves you typing; an agentic coding model saves you thinking—if you know how to steer it. ...