alt Hacker NewsFable needs more... ambitious tasks than Opus to tell the difference and let me tell you the difference is there.
Simple tasks are simply saturated just like simple benchmarks. There's a level of intelligence where you simply don't need more for some things.
Yes, Fable tends to only shine when the work to be done is complex and it takes a long time. Other models wedge in different ways.
I do wish the subscription had a separate weekly allocation for rare usage.