Yes
Fable 5 took far less time and produced actually useful analysis
RayVR on Hacker News
In the thread “Claude Fable 5”
Helped: Fable 5 identified improvement routes instead of regurgitating code.
Got in the way: Opus ignored instructions and looped on broken logic.
I gave fable 5 a task for which opus has been really really underperforming. Fable 5 took far less time and produced actually useful analysis. Instead of just regurgitating roughly what the code already does or misunderstanding entirely, it identified multiple routes to improve. …