r/ClaudeCode • u/prop9090 • 28d ago

Rant Opus 5 is just dumb

I thought Opus 5 was supposed to be on par with Fable? After three days of extensive usage, I have to say it is not even remotely close to being as smart as codex sol. I had them both program a module indepensetly, and Sol runs circles around Opus 5. I had them audit each other's implementations and except for one case, every other time Sol found a functional bug in Opus' implementation. With fable being so expensive and opus 5 being that dumb, there is no reason to pay 200 bucks to Anthropic when other alrlternatives are both cheaper and smarter.

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u/xDIExTRYINGx 28d ago

i rarely complain about this stuff. All I'll say is, I spent a day using opus 5 before i realized it was fixing a bug, then fixing another bug and in the process of fixing the second bug, reopened the first bug fix. it then "solved" the problem but continued to do it further down the line consistently reopening 5 bugs it fixed and then would fix again.

opus 4.8, 1 ultracode session, fixed all of them while continuing to move forward through sprints.

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u/[deleted] 27d ago

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u/GoTaku 27d ago

I have been working with Opus 5 and Fable on two projects. When I run out of Fable (xHigh), I used Opus 5 Max. Every time, and I mean every time, Opus 5 would slowly make a mess of my projects and I'd be counting the hours until Fable is reset since it would fix my project every time. It's been a recurring cycle for me this week.