OpenAI Codex CLI: Lightweight coding agent that runs in your terminal

Posted by mfiguiere 3 days ago

OpenAI Codex CLI: Lightweight coding agent that runs in your terminal(github.com)

508 points | 280 commentspage 3

jwrallie 3 days ago|

> Does it work on Windows? > Not directly. It requires Windows Subsystem for Linux (WSL2) – Codex has been tested on macOS and Linux with Node ≥ 22.

I've been seeing similar things in different projects lately. WSL in long term seems to be reducing the scope of what people decide to develop natively on Windows.

Seeing the pressure to move "apps" to the Windows Store, VSCode connecting to remote (or WSL) for development, and Azure, it does seem intentional.

throwaway314155 3 days ago|

The developer experience of linux is simply more popular.

usecodenaija 2 days ago||

So, OpenAI’s Codex CLI is Claude Code, but worse?

Cursor-Agent-Tools > Claude Code > Codex CLI

https://pypi.org/project/cursor-agent-tools/

submeta 2 days ago||

Never heared of Cursor Agent tools. And that is better than Claude Caude according to whom? Genuinely curious.

usecodenaija 1 day ago||

Are you living in a cave?

anyways, here you go:

Cursor Agent Tools is a Python-based AI agent that replicates Cursor's coding assistant capabilities, enabling function calling, code generation, and intelligent coding assistance with Claude, OpenAI, and locally hosted Ollama models.

https://github.com/civai-technologies/cursor-agent

oulipo 2 days ago|||

I've been quite unimpressed by Codex for now... even the quality of the code is worse than Claude for me

killerstorm 2 days ago||

This tool has nothing to do with Cursor.

Very misleading to use popular brand like that, possible scam.

usecodenaija 2 days ago||

Maybe read the docs before replying:

https://github.com/civai-technologies/cursor-agent

p3rry 2 days ago||

I had built this few weeks back on same thought https://github.com/shubhamparamhans/Associate-AI-EM/

sim7c00 2 days ago||

notes "Zero setup — bring your OpenAI API key and it just works!"

requires NPM >.>

jackchina 2 days ago||

Claude Code has outstanding performance in code understanding and web page generation stability, thanks to its deep context modeling and architecture-aware mechanism, especially when dealing with legacy systems, it can accurately restore component relationships. Although Codex CLI (o4-mini) is open source and responsive, its hallucination problems in complex architectures may be related to the compression strategy of the sparse expert hybrid architecture and the training goal of prioritizing generation speed. OpenAI is optimizing Codex CLI by integrating the context control capabilities of Windsurf IDE, and plans to introduce a hybrid inference pipeline in the o3-pro version to reduce the hallucination rate.

dgunay 2 days ago||

This is a decent start. The sandboxing functionality is a really cool idea but can run into problems (e.g. with Go build cache being outside of the repository).

romanovcode 2 days ago||

Tried it out on a relatively large Angular project.

> explain this codebase to me

> doing things and thinking for about 3 minutes

> error: rate_limit_exceeded

Yeah, not the best experience.

jamesy0ung 2 days ago||

It's a real shame sandbox-exec is deprecated.

zora_goron 3 days ago||

Anyone have any anecdotes on how expensive this is to operate, ie compared to performing the same task via Claude Code?

mrcwinn 3 days ago|

A one line change, that took a decent amount of reasoning to get to for a large codebase, cost $3.57 just now. I used the o3 model. The quality and the reasoning was excellent. Cheaper than an engineer.

john2x 2 days ago||

Technically it’s more expensive, because it cost engineer + $3.57 :)

mcbuilder 3 days ago|

So a crappy version of aider?

dgunay 2 days ago||

Aider doesn't have a more agentic/full-auto mode (at least not yet, there's a promising PR for this in review).

There may or may not also be some finessing necessary in the prompting and feedback loop regardless of model, which some tools may do better than others.

inciampati 2 days ago||

The AI companies don't understand that they're the commodity. The real tools are the open source glue (today: aider) that bring the models into conversation with data and meaningmakers like ourselves.

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