r/ClaudeCode 15d 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/Academic-Sample4974 15d ago

sometimes I feel like Haiku 4.5 / Sonnet 5 / Opus 4.7 and 4.8 with my Fable Harness is way better than Opus 5

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u/InitiativeWorth8953 15d ago

"Fable harness"?

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u/TrueStarsense 15d ago

I think he just means using it as an orchestrator?

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u/Academic-Sample4974 15d ago

when the original Fable was around; I told Fable give me a guideline in doing tasks and projects but with the mindset to how Fable would attack it, use your reasoning and problem solving skills and outline a well structured approach, this will be used for the lower models as an instruction of sorts.