This article is really really good, I think it deserves to be a post of it’s own. This quote is the best description of the way I experience being verbal that I’ve found:

When you are autistic, talking can be exhausting. Even if you are extremely verbal like I am – adults praised my precocious vocabulary as a child, and I have often been called a “chatterbox” – vocal speech is draining. My well of words may be deeper than that of most other autistic people, but it is not bottomless.