A model tuned to read, write, and fix computer code.
Codex is like a super-fast lab partner in computer class. You share the idea, and it starts typing like the keyboard owes it money.
It writes code and finishes half-done functions. It can fix bugs too, but you check it before launch.
Copilot
Codex often provides the code-writing power behind tools like Copilot.
Agentic coding
Codex helps AI do more than suggest code. It can help write and change it.
LLM
Codex is a kind of LLM tuned for programming work.
Cursor
Models like Codex are often built into AI coding tools like Cursor.