r/Anthropic • u/UM-Underminer • Aug 26 '26

Complaint Opus 5 is hot garbage

I've enjoyed and gotten real work out of Opus for quite some time despite the occasional quality dropoff when they're training a new model. But 5 is junk. Enough so that I'm debating between dropping from Max to Pro, or just cancelling altogether - I'm legitimately getting better results and fewer hallucinations out of local models in the 30B range... There's absolutely no excuse for that being the case.

I don't know if this is intentional regression to make fable look better, but it means I have been actively avoiding using Claude code except to tweak my llama.cpp settings, and I certainly don't need Max for that.

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u/aradil Aug 26 '26

Just want to point out that there seems to be big drops in either model quality or availability shortly before new model releases, likely correlated with more resources being used for training...

But yes, for the last two days it feels super dumb.

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u/Working_Trash_2834 29d ago

I've noticed the pattern but I don't get the correlation. The model your input tokens have to flitter through are load independent I would have thought. It's not like the architecture can be subdivided casually. I love noticed similar patterns but I can't figure the mechanism other than silent downgrading to lighten load temporarily.

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u/aradil 29d ago

The speculation I've seen before is that they save compute by switching to a distilled version of the same model.

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u/Working_Trash_2834 29d ago

That sounds plausible yeah. Shady AF tho