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I've done my own research on that as a part of my Aqueous [1] archiver, and the conclusion is that the inherent information entropy is about as same (CJK scripts, for example, compresses much better when they are turned into their native character encodings). So a script-aware tokenization should make that irrelevant.

[1] https://lifthrasiir.github.io/aqueous/ (specifically wrt-recons-hangul codec)

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Are bytes relevant? These things are billed by the megatoken, not the megabyte.
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If tokens use UTF-8 bytes then it could be a factor.
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A token is an index into a dictionary. What the dictionary uses isn't seen, this is why they couldn't count the 'r's in 'strawberry'.
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utf8 is just one of the encodings that exist, and is kind of irrelevant at the point it contacts the llm
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bit configurations aren't uniform across those bytes, everything should compress to similar sizes
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