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

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514 points mfiguiere | 7 comments | 16 Apr 25 17:24 UTC | HN request time: 0.001s | source | bottom
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gklitt ◴[16 Apr 25 20:37 UTC] No.43710093[source]▶
I tried one task head-to-head with Codex o4-mini vs Claude Code: writing documentation for a tricky area of a medium-sized codebase.

Claude Code did great and wrote pretty decent docs.

Codex didn't do well. It hallucinated a bunch of stuff that wasn't in the code, and completely misrepresented the architecture - it started talking about server backends and REST APIs in an app that doesn't have any of that.

I'm curious what went so wrong - feels like possibly an issue with loading in the right context and attending to it correctly? That seems like an area that Claude Code has really optimized for.

I have high hopes for o3 and o4-mini as models so I hope that other tests show better results! Also curious to see how Cursor etc. incorporate o3.

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strangescript ◴[16 Apr 25 23:08 UTC] No.43711286[source]▶
Claude Code still feels superior. o4-mini has all sorts of issues. o3 is better but at that point, you aren't saving money so who cares.

I feel like people are sleeping on Claude Code for one reason or another. Its not cheap, but its by far the best, most consistent experience I have had.

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1. ekabod ◴[17 Apr 25 00:21 UTC] No.43711764[source]▶
"gemini 2.5 pro exp" is superior to Claude Sonnet 3.7 when I use it with Aider [1]. And it is free (with some high limit).

[1]https://aider.chat/

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2. jacooper ◴[17 Apr 25 00:23 UTC] No.43711773[source]▶
Don't they train on your inputs if you use the free Ai studio api key?
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3. asadm ◴[17 Apr 25 00:27 UTC] No.43711799[source]▶
speaking for myself, I am happy to make that trade. As long as I get unrestricted access to latest one. Heck, most of my code now is written by gemini anyway haha.
4. razemio ◴[17 Apr 25 05:39 UTC] No.43713447[source]▶
Compared to cline aider had no chance, the last time I tried it (4 month ago). Has it really changed? Always thought cline is superior because it focuses on sonnet with all its bells an whistles. While aider tries to be an universal ide coding agent which works well with all models.

When I try gemmini 2.5 pro exp with cline it does very well but often fails to use the tools provided by cline which makes it way less expensive while failing random basic tasks sonnet does in its sleep. I pay the extra to save the time.

Do not get me wrong. Maybe I am totally outdated with my opinion. It is hard to keep up these days.

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5. mstipetic ◴[17 Apr 25 06:15 UTC] No.43713635[source]▶
It has multiple edit modes, you have to pair them up properly
6. ekabod ◴[17 Apr 25 18:42 UTC] No.43720638[source]▶
I tried Cline, but I work faster using the command line style of Aider. Having the /run command to execute a script and having the console content added to the prompt, makes fixing bugs very fast.
7. strangescript ◴[21 Apr 25 19:49 UTC] No.43755725[source]▶
I would use Aider if it had an agent mode. It needs to catch up with UX, frankly just have a mode that copies what claude code does.