The title in sentence case is: The answer to your question

Langgraph does not have a drag and drop UI, thats Langflow (which is not a part of Langchain, isn't that fun lol)

Yeah Langflow isn't bundled with Langchain but it is built on top of it. I am interested in contributing towards the development of a similar platform for LlamaIndex. Been using it exclusively for a year and I have introduced it for new projects at my new job. Everyone has been happy so far

The only missing piece is an interactive playground to build workflows

I could create custom components for Langflow using LlamaIndex under the hood but it's not the same

I think langflow might already have components for llama-index (or at least, I saw that in one of our slack channels, maybe it never got released), but agreed, not quite the same

If you want to start some initiative towards this, happy to promote and help out where I can. I think a lot of people would find it useful, but so far we haven't had the resources to commit to something first-party just yet

Since workflows in llama-index for example are so general, it will take some scoping on the UI side to decide what to expose and how to expose it