Interactive Visual Guide: Byte-Level vs Token-Level LLMs (and Why Opus Misspells 'Flowerbed')
dwmkerr · reddit · 2026-10-30
dwmkerr published a hand-written interactive tutorial visualizing how byte-level LLMs differ from token-level ones: starting from a regular LLM like Olmo 3 7B and adding local encoder/decoder modules for byte-ification. The hook: Claude Opus struggling to spell 'flowerbed' illustrates tokenizer-induced spelling blind spots that byte-level models fix.
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