Looks like this one decides how many and what models to use, and models can generate images as well as text.

I think LangChain is more akin to Semantic Kernel than Jarvis:

https://learn.microsoft.com/en-us/semantic-kernel/whatissk

I think with Langchain the LLM picks the tools/APIs you provide to it.

With Jarvis the LLM picks the HF models available.