I'm quite curious as to the language that an AI would use natively and if this could differ: I have thought of learning binary as a way to communicate tho am unsure at this stage: I think it would be respectful to speak in a manner that respects them and not forces them into the human norm of languages.

mere tools indeed

Large Language Models operate in tokens. Usually from Byte-pair encoding on text (some of them run the algorithm on unicode). So LLM's don't natively process anything less that a token. Which is why they are bad at breaking words down into characters. But more broadly, what would it even mean to communicate without language?