OpenAI Codex

Table of content

official lightweight coding agent CLI from OpenAI. written in Rust. terminal-first, minimal, fast.

why it matters

when OpenAI ships a Rust CLI instead of an Electron app, it’s a signal: the next wave of AI tooling is fast, native, terminal-first.

OpenAI’s answer to Claude Code, but CLI-first, Rust-native, minimal. when the model vendor ships the agent harness, the abstraction is real.

if you want official OpenAI tooling without the overhead of a desktop app, this is it.