SK does a lot of the same things that Langhain does at a high level.
The most useful bits for us are prompt templating[0], "inlining" some functions like `recall` into the text of the prompt [1], and service container [2] (useful if you are using multiple LLM services and models for different types of prompts/flows).
It has other useful abstractions and you can see the full list of examples here: