I’d argue the opposite. I’ve switched back and forth from one to the other and Opus/Fable has been constantly better than any GPT in my daily work. It’s a bit slower but it does the things right, with as little code as possible, some comments where needed. Codex is faster but you always have to correct it because it got something wrong; it writes tons of code ("let me add a small helper") with obvious comments.

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ljm 2 hours ago | parent | next [-]

Purely anecdotally the one persistent issue I have with LLMs writing code is that they are absolutely paranoid and add a load of indirection and defensive crap and even if you prompt to avoid that it will often require manual steering to remove the cruft.

	▲	hk__2 11 minutes ago \| parent \| next [-]
		I’ve experienced this with GPT but not with Opus/Fable.
	▲	adastra22 an hour ago \| parent \| prev [-]
		I have not noticed this with Opus 4.6+. The result is usually not too far from what I would have written myself.

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cevn 2 hours ago | parent | prev | next [-]

Sounds like you are talking past each other. GP is saying the harness of codex is higher quality, which I can believe, even if the models are not as good as Opus/Fable.

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nilkn 2 hours ago | parent | prev | next [-]

I'm not sure how meaningful this is. Fable only just recently become more broadly available, and GPT-5.6 is launching broadly today.

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dbbk 2 hours ago | parent | prev | next [-]

I really love the Opus/Fable models but I'm honestly sick to death of the buggy product. The CLI always has some weird issue. Right now it doesn't even output messages before tool calls, it just swallows them and they disappear.

I don't like OpenAI as a company, but they appear to have QA, and that is probably enough to get me to switch.

	▲	pqdbr 5 minutes ago \| parent \| next [-]
		Glad I’m not the only one noticing this. It’s maddening.
	▲	walthamstow 2 hours ago \| parent \| prev [-]
		There was an issue on Claude Code the other day where it would only wait 60 seconds when it had asked a set of questions, then if it didn't get a response from the user it would just continue however it thought was best. Completely unusable. It took them nearly 48 hours to merge a fix.

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behnamoh an hour ago | parent | prev [-]

> Codex is faster but you always have to correct it because it got something wrong

this has been my experience with Codex as well, and I have to fix its mistakes every single time. But recently, I literally threw away three hours of work because it kept adding hundreds of lines to my code base. When I restarted the entire work using Fable and Opus, it was like night and day.