I wrote this in June, and I'm honestly not sure I've felt the same magic since: I was close to maxing out my $200 plan for the week, almost all Fable use [Claude CLI]. My observations: Fable seemed to have bigger-picture thinking and completed tasks more thoroughly vs just focusing on executing the ask. It pieced together context and intent like an all-star employee would, vs one that just does what you say. Not overeager (important!), but if the above-and-beyond was warranted, it just did it. This was surprisingly delightful. Coderabbit seemed to find ~1/3 or so as many issues when reviewing, too.
This is exactly my experience as well.