What is Codex CLI and when do you use it vs Copilot? (ANSWERED)
TL;DR — Quick Answer
Codex CLI is an OpenAI coding agent for terminal-driven, multi-step repo tasks. Copilot remains strongest for in-editor flow. Use Codex CLI for autonomous batches and toolchain loops; use Copilot for continuous local assistance.
The Interview Question
Explain OpenAI Codex CLI (coding agent) and compare it to GitHub Copilot for engineering teams. When is a CLI agent preferable to IDE autocomplete?
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Codex CLIOpenAICoding AgentsCopilotOpenAIMicrosoft