I detect the regression already in planning with Opus 5, so I do not let Opus 5 implement anything. But it is a waste of time and tokens! Does planning with Opus 5 works out for you?

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cbg0 2 hours ago | parent [-]

It sounds like you just need to correct the plan it lays out to avoid the regression? I'm just looking to debug with you, not defending the model. I've mostly used Opus 5 for code reviews & bugfixes.

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Aldipower 2 hours ago | parent [-]

Yeah fine. I mean my plan wasn't to difficult. For example this morning I started with Opus 5 to tackle a problem. During planning at some point Opus 5 detected _8_ regressions in it's own planning, after I directed it towards those potential regressions. So, in this very moment now, Fable 5 implements code already and the planning before with Fable, done with the same instructions, was flawless and quick. And I am sure, Opus 4.8 would be flawless either. Same harness, same claude.md, etc..

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cbg0 2 hours ago | parent [-]

Do you think it might be overthinking? Try it on medium effort.

	▲	Aldipower 2 hours ago \| parent [-]
		Probably, I ran it on xhigh. Worth a try.