The point is that there aren't many complex tasks were fable delivers a significant value increase over cheaper models.

Single prompting a very complex tasks is rare even on frontier models, because it can be done successfully only for specific situations (e.g. you have a very strong verification step the model can iterate on).

Most of my everyday usage is for smaller takes, were you don't really get the benefit of the most expensive models, and my guess is that is the case for the most users

> The point is that there aren't many complex tasks were fable delivers a significant value increase over cheaper models.

Strong disagree on this. Any decently complicated task like a refactor is going to be more likely to be solved by Fable than by Gemma 3B or whatever.

I have personally tried to use Sonnet over Opus for tasks and Sonnet gets things right sometimes and at other times I wish I had just paid higher.

This is the standard pattern I keep seeing and I can have a bet with you that it would stay like this.