Steve Yegge(@Steve_Yegge):I've been working with Opus 5.5 for a couple weeks, finally, and it's an awesome model. For explanations and teaching me stuff, it's far preferable to Fable. I have evals that show that while Opus 5.5's precision rivals Fable 5.1's across all tasks in my system, its recall is not as good. For any given specific task they're about equal. But when the task is more open-ended, Fable correctly spots and acts on important issues more often. It shows better perspective. I still think Opus 5.5 is an incredible model and I use it for the majority of work now.

2026.10.03 02:10

I've been working with Opus 5.5 for a couple weeks, finally, and it's an awesome model. For explanations and teaching me stuff, it's far preferable to Fable. I have evals that show that while Opus 5.5's precision rivals Fable 5.1's across all tasks in my system, its recall is not as good. For any given specific task they're about equal. But when the task is more open-ended, Fable correctly spots and acts on important issues more often. It shows better perspective. I still think Opus 5.5 is an incredible model and I use it for the majority of work now.

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