It is hardly a seed round. Langchain is the most mature tool (not saying much) in this new LLM revolution. Like a market leader doing a seed round.

Anything less than $10M would be wholly inappropriate for the moment. I’m shocked it wasn’t much more. Surely this will be followed by $100M within months. Rarely has there been a field of technology that has moved as rapidly as LLMs are in the last two months.

This was my first thought too - I'm starting to question it, because they do have a product. Whether they have fit, will be interesting to see. More than most of the hype seed rounds in 2021.