Kate Tkachuk

1 week ago | learn.g2.com | Sudipto Paul |Kamaljeet Kalsi |Kate Tkachuk

While everyone was busy talking about OpenAI’s new o3 and o4-mini models, the company quietly dropped something that could shake up how developers write and run code: Codex CLI. What is OpenAI’s Codex CLI? OpenAI’s Codex CLI is an open-source, chat-driven coding agent designed for developers who live in the terminal. OpenAI launched Codex CLI on April 15, 2025.