We’re releasing GPT-5-Codex—a version of GPT-5 further optimized for agentic coding in Codex. It’s now live everywhere you use Codex—in your terminal or IDE, on the web, in GitHub, and in the ChatGPT iOS app. We’re working on optimizing GPT-5-Codex for use in other agentic coding tools, and will b…

Same here as well, running on a 10000 line code it is taking 15 minuts sometimes to find one line to change - make it somewhat unusable

Welcome to the community Max Zhadobin!

The usage limits on plus are crazy… I cant afford a pro plan, however on 2 plus plans i could do 5 days of work, and then both would be done. Since the new codex… Which yes, is painfully slow, I have hit both caps in 1 day and a few hours (NOT RUN SIMULTANEOUSLY). Its not 2 on one account, they are…

I have been waiting all week for an API updated to make this available for custom agents. openai.NotFoundError: Error code: 404 - {'error': {'message': 'The model `gpt-5-codex` does not exist or you do not have access to it.', 'type': 'invalid_request_error', 'param': None, 'code': 'model_not_found…

I gave it a try in vscode. It is a dumb model. A half dozen “searching” code with powershell and getting nowhere, when what it needed was entire file loaded to context for observation, and I’m done.

Seconded because it gpt-5-codex doesn’t work with Codex CLI if using an API key. (Our company doesn’t issue ChatGPT accounts, but does let us use API keys charged to the corporate account.) Ideas of when we can get this support?

I support the attempt to make GPT coexist with other IDEs. For now, even the low-end model in Windsurf seems to perform well enough, but I feel uneasy that I cannot see how credits are being consumed. At present, I’ve noticed the following behaviors: It inserts carriage return codes (\r\n) into…

I’m not sure if something changed when the new model came out but I have noticed a significant increase in the rate limits (Pro). 1-2 weeks ago, I was hitting the weekly capacity every single day. And it did not take a full week, I’ll tell you that. Now I am raw dogging 6+ consoles all day and nig…

I have been extremely happy with gpt 5 codex high in codex cli. I have not hit rate limits too often, and it gets the job done nicely. I love that it does not go overboard with comments like so many models tend to. Overall this is tremendous value for 20-30 dollars a month

@edwinarbus any updates on when gpt5-codex will be available through API. thanks

Upgrades to Codex — gpt-5-codex

Announcements

edwinarbus September 23, 2025, 7:03pm 23

Today! GPT-5 Codex available in the API

Topic		Replies	Views
Codex is rapidly degrading — please take this seriously Codex CLI codex	22	8839	February 22, 2026
Introducing GPT-5.1-Codex-Max: Enhanced reasoning and long-horizon workflows Codex announcement , codex	9	1973	November 27, 2025
The new speed feature for Codex . What is your experience? Codex CLI	2	838	March 21, 2026
Why Is GPT-5.4 Mini Showing Up in My Codex Usage? Codex	10	949	September 10, 2026
Need to have serious discussion with the $200/month plan Codex	8	3172	September 9, 2026

Upgrades to Codex — gpt-5-codex

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