how much do these billion dollar 'ai agent' coins manage in $$$?

Anything 1B+ is infrastructure, not an agent that manages money

The infra enables anyone to launch a specialized and tokenized ai agent that can autonomously do variety of things like make transactions, post on Twitter/FC, and increasingly more complex stuff eg order pizza

Those are what the big infra projects like ai16z and virtuals do. Lower mcap stuff is more specialized and verticalized. eg AIXBT is an agent that reads CT and posts theses about different coins

infra for what? can you pls eli5 good sir