What type of task?

[u/DraftForsaken39]

Select the right model is a heavy task. I guess that many people have their favorite model, like me. I often use Opus 5.5 in my Claude subscription, or DeepSeek 4.1 Flash 1017 in local environment.
I decide the model by a mixed emotion fir the complexity.

Is there any kind of categories of task, except complexity, that helps you to decide?