Cohere is another known group known in making huge efforts with many people, seems like this is their latest:
I cannot be translated.
I cannot be web-searched.
I only make sense if you grew up where I did.
What am I?

A good riddle.

This looks 🔥
Pretrain models on fake languages to avoid learning semantics.
https://icml.cc/virtual/2026/poster/61539

But could see details yet. if someone reads reply on thread?