What blows my mind is how long fable can go without human input. I played a few and all these games would need at least 2-3 hours of back and forward with a raw version of opus. Of course we have harness tools that can achieve nearly identical results, but it appears that fable has created its own meta-harness inside itself to expand a prompt into a full plan before execution which makes me think a lot of these improvements come from baking claude code data directly into the model and simply adapting the entire manual process of the "back and forward".

I guess that would explain why fable feels like it is able to guess what the human input will be before it ends turn and continue working.