OpenAI Codex CLI
Coding Agents
86.6k
stars
OpenAI Codex CLI is an open-source terminal coding agent written in Rust (Apache-2.0, 82K+ stars) with a 77.3% Terminal-Bench score. May 2026 adds a Codex Chrome extension for in-browser DevTools workflows, a headless remote-control app-server, and a Codex on Mobile preview enabling ChatGPT iOS/Android to control the macOS Codex app.