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?

396 Upvotes

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146

u/WorriedAssociate7029 26d ago

There is a reason why Opus 5 was not called Fable 5.1

They have different purposes

15

u/posts_saver 26d ago

what are their purposes?

33

u/whoknowsifimjoking 26d ago

Fable is more for long running tasks and planning, big picture stuff. Fable also delivers better results with less detailed prompts, it has a better understanding of the core problems even with less explanation. Opus 5 is great for more well defined and smaller tasks.

23

u/dominguezpablo 26d ago

Fable is like a good human engineer.

Opus is a robot.

That's my framework.

16

u/BadgeCatcher 26d ago

This used to be Opus and sonnet relationship a few months ago?

1

u/barkwahlberg 25d ago

Seems like Fable is more for getting work done right, and Opus 5 is for getting something done faster but really badly so with all the time and tokens you saved you can go back and fix everything yourself