alt Hacker NewsFable was a big improvement in planning for me over Opus. I usually do a bit of work preparing tasks before handing them off to Opus or else I get bad results. I didn't plan on writing software this week because I was working on other things but changed my mind to test out Fable. I didn't have any work prepared. Fable was able to write the high level plans that later turned into coding tasks. Of course any model could wirte plans like that, but I had confidence in these plans similar how Opus 4.5 gave me a huge jump in confidence in the code it wrote. (Honest, I am not paid to write this.)
Honestly the code gen part has been “good enough” for a while now, especially with models like Opus. The broader point this post is making is that newer SOTA models are improving at the "planning layer", and this is usually the the part a senior developer would usually handle (identifying edge cases, thinking ahead, thinking about tradeoffs, etc.)