Thursday, April 17, 2025

AI models: OpenAI o3, o4-mini + Codex CLI

Introducing OpenAI o3 and o4-mini | OpenAI

"smartest and most capable models to date with full tool access"

trained to think for longer before responding



Codex CLI: frontier reasoning in the terminal
... a lightweight coding agent you can run from your terminal. It works directly on your computer and is designed to maximize the reasoning capabilities of models like o3 and o4-mini, with upcoming support for additional API models like GPT‑4.1⁠.

You can get the benefits of multimodal reasoning from the command line by passing screenshots or low fidelity sketches to the model, combined with access to your code locally. We think of it as a minimal interface to connect our models to users and their computers. Codex CLI is fully open-source at github.com/openai/codex⁠(opens in a new window)

(direct alternative for Anthropic "Cloud Code" CLI tool)

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