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GPT-5-Codex

openai.com

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61–70 of 144 posts

Re: GPT-5-Codex

#61

Post by dcre »

dwaltrip wrote: post #21
tedsanders wrote: post #8

Earlier quoted context omitted.

> SWE-bench performance is similar to normal gpt-5, so it seems the main delta with `gpt-5-codex` is on code refactors SWE-bench is a great eval, but it's very narrow. Two models can have the same SWE-bench scores but very different user experiences. Here's a nice thread on X about the things that SWE-bench doesn't measure: https://x.com/brhydon/status/1953648884309536958

so annoying you cant read replies without an account nowadays

Change the url from x.com to xcancel.com to see it all.

Re: GPT-5-Codex

#62

Post by sanex »

I've considered swapping to Claude since the last update made talking to gpt absolutely terrible. I heavily make use of being able to put in PRs on mobile by working with codex, and if it wasn't for this I'd probably have switched. Excited to see the updates.

Re: GPT-5-Codex

#63

Post by drob518 »

jumploops wrote: post #28
siva7 wrote: post #22

Earlier quoted context omitted.

So you're all saying suddenly codex cli w gpt 5 codex is better than claude code? Hard to believe

Not suddenly, it's been better since GPT-5 launched. Prompting is different, but in a good way. With Claude Code, you can use less prompting, and Claude will get token happy and expand on your request. Great for greenfield/vibing, bad for iterating on existing projects. With Codex CLI, GPT-5 seems to handle instructions much more precisely. It won't just go off on it's own and do a bunch of work, it will do what you…

Yea, I have struggled with Claude to keep it focused on what I want and only what I want. I have no experience with GPT-5-Codex, but maybe I should.

Re: GPT-5-Codex

#64

Post by CuriouslyC »

wahnfrieden wrote: post #39
siva7 wrote: post #22

Earlier quoted context omitted.

So you're all saying suddenly codex cli w gpt 5 codex is better than claude code? Hard to believe

It is 100% true. And they are rapidly losing users to Codex. Charts were shared recently showing a massive migration underway.

Oh yeah, Sonnet performance has been in the toilet for me. They claim they've mitigated it but when 4.0 first dropped CC was really impressive, and now I constantly have to babysit it because any time it hits a challenge it'll just stop trying and make a simple toy version and declare false victory. If I don't catch it and I let it build on top of that bullshit, things get nasty in a hurry.

It's a shame because the plan is a great deal but the number of all caps and profanity laced messages I'm firing off at Claude is too damned high.

Re: GPT-5-Codex

#66

Post by incomingpain »

NitpickLawyer wrote: post #23
incomingpain wrote: post #2

Still waiting on codex cli to support lm studio.

? Isn't lmstudio API openai compatible? Codex cli already supports 3rd party models, you have to edit the config yaml file, and you can add many model providers.

I never managed to get it to work. I used chatgpt to try to do it for me :)

Re: GPT-5-Codex

#67

Post by bdcravens »

I literally tried out Codex for the first time this weekend, and the results were ... weird. It'll be interesting to see if it does things differently. (It was a super simple prompt, standing up a Rails app in Docker Compose with a home page and Devise; it hard-coded each file to create inside of the bootstrap.sh, instead of actually creating the files to begin with)

Re: GPT-5-Codex

#68

Post by SecretDreams »

klipklop wrote: post #36

From my observation of the past 2 weeks is that Claude Code is getting dramatically worse and super low usage quota's while OpenAI Codex is getting great and has a very generous usage quota in comparison. For people that have not tried it in say ~1 month, give Codex CLI a try.

All that matters to the end users is to never be trapped. Cross-shop these products around constantly and go for lowest price, highest performance ratios. We've seen over the last year all companies trade blows, but none are offering something novel within the current space. There is no reason to "stick to one service". But the services will try very hard to keep you stuck for that SaaS revenue.

Re: GPT-5-Codex

#69

Post by CuriouslyC »

sanex wrote: post #62

I've considered swapping to Claude since the last update made talking to gpt absolutely terrible. I heavily make use of being able to put in PRs on mobile by working with codex, and if it wasn't for this I'd probably have switched. Excited to see the updates.

Don't. Claude is worse for everything but coding, and even then it's mostly better for coding in greenfield/small projects, and it makes a mess of large projects. The only thing really good about Claude was the plan economics, and now I'm not so sure about it.

Re: GPT-5-Codex

#70

Post by CuriouslyC »

simianwords wrote: post #32

OpenAI is starting its new era of specialized models. Guess they gave up on a monolithic model approach

If you try to optimize for everything you get a model that's good at nothing (or hyper expensive to train and run). Simple economics. There is no free lunch.
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