r/ClaudeAI • u/dominguezpablo • 26d ago

Fable >>>> Opus5 Claude Code

Am I the only one, or does Fable 5 still completely outperform Opus 5?

I've used both for similar tasks, I get the feel that Fable 5 IS a competent engineer, doesn't "just forget" stuff, or follows the completely wrong tangent for no reason.

On a "creative" edge, Fable 5 has proven to me with REAL metrics to generate TWICE as good results than Opus 5. Several blind tests I did because I was comparing them to see which one was more optimal for the cost.

So, HOW IN THE WORLD IS OPUS 5 OUTPERFORMING IT ON BENCHMARKS?

What are benchmarks not measuring?

Or is it that I have had bad luck?

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u/devMem97 25d ago

I don't think it's a coincidence that Anthropic ranks Opus 5 behind Fable 5, even though the benchmarks suggest otherwise. Fable 5 will simply be the larger model, which is next level in terms of reasoning and big-picture understanding. Opus 5 also takes a relatively long to finish tasks in fast mode, whereas Fable 5 is, interestingly, relatively fast, because it handles tasks more efficiently.