I also have preferred Opus 5 to Fable 5 for most things. Fable is way better than Opus 4.8 for me - it just produces much more complete work in one shot reliably. But when Opus 5 came out, I found that I was getting the same results as Fable, just faster and cheaper.
I do still use Fable for a few classes of problems - one being unusual and highly visual tasks. For instance, I had Fable build me a scroll-interactive web animation that Opus was struggling with.
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I also have preferred Opus 5 to Fable 5 for most things. Fable is way better than Opus 4.8 for me - it just produces much more complete work in one shot reliably. But when Opus 5 came out, I found that I was getting the same results as Fable, just faster and cheaper.
I do still use Fable for a few classes of problems - one being unusual and highly visual tasks. For instance, I had Fable build me a scroll-interactive web animation that Opus was struggling with.