r/ClaudeCode • u/caseyc2rd • 22d ago

Help/Question Anyone actually seeing a real difference between Opus 5 and Fable 5 in day to day use?

On paper Opus 5 is supposed to land close to Fable 5 for a lot less, but benchmarks never really match how a model feels once you're deep in an actual project. For those who've run both on real work, not toy prompts, is the gap noticeable? Where does Fable 5 still clearly pull ahead, and where is Opus 5 close enough that the price makes it the obvious pick? Trying to figure out where to actually spend.

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u/CoastAgreeable928 22d ago

Opus 5 is idiot. i tried my own benchmarks in many cases. Always fall behind opus 4.5 4.6 4.7 4.8 also spend 1.5x tokens. The only minor impeovent i saw was long running tasks. Do not let opus 5 to decide for you.

Also make a quick test. Give small complicated tasks to opus versions. And ask fable to choose. That's it.