I’m impressed by the Vercel SDK website (https://sdk.vercel.ai/), which seems to be able to synchronize queries across various chatbot models and remember past conversations.

Can someone explain how they achieve this functionality? Is the source code available for download?

If not, are there any similar open-source projects or libraries that I can use to implement similar features in my own project?

Tried to access the GitHub page but to no avail.