What is Codex ?
Codex is best understood as an AI coding agent rather than a simple code generator. A code generator usually responds to a prompt by producing a snippet of source code. An agent can perform a sequence of connected actions in pursuit of a larger objective.
For example, a developer might ask Codex to add a customer export function to an existing PHP application. Codex can inspect the project, locate the relevant database queries, identify the user interface, add the export logic, update the page, run available checks, and summarise the resulting changes…