[borissk]

No, the different multiverse hypotheses are something different. The size of "our" universe is unknown, we can can see a sphere with a diameter of 94 billion light years. How much is there beyond that sphere is a research topic. No light from beyond the sphere has reached us during the lifetime of the universe.

[anonymouskimmer]

This is about inflation, right? We don't know how much the universe inflated after the big bang, just that it did.