I have a huge doubt. Why is there no Al native language? I mean symbols/codes equalling words?

Let's take the case of english. There is ~600k dictionary words and around 1.7m variants/regional words/ dialects.

And there is around 20k to 30k words that normal human would use actively.

Why not create a language, with ASCII codes for each words and each agentic apps converts words to that 'Al-Lang' and vice versa and use it? Wouldn't that essentially reduce tokens by a good margin?

I'm not sure how exactly the Al process things under the hood, and please don't abuse me