I’ll put in my two cents here:
If you’re using Fable to build web apps, then you are probably doing something wrong. I am guilty of this because the idea that I can just toggle on Fable or Sol and let it go to work is attractive. However, these models are better suited to orchestration: write structured build plans that Grok 4.6 can easily follow and do the “grunt work” of writing the code.
The frontier models are intentionally not cost-effective. But you wouldn’t buy a Ferrari to commute to work when a Toyota would do just fine. (And Grok is more comparable to a Tesla ;))