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    CoBPE is claimed to produce 30% shorter English token sequences

    A post says CoBPE uses six tokens where BPE uses 13 for a Hobbit line, without changing the text.

    Alisa LiuAL
    Yuval Reif @ COLM2026YR
    2 Sources, 4h ago, first seen 4h ago

    TLDR

    A post comparing CoBPE with BPE says CoBPE attaches short words and punctuation to other words, reducing a quoted Hobbit line from 13 tokens to six without changing the text. It claims 30% shorter sequences across English and better LLMs at the same compute.

    Combined views

    995

    2 Sources, first seen 4h ago

    Combined views

    995

    2 Sources, first seen 4h ago

    22 likes
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    22 likes
    3 comments
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    9 reposts
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    9 reposts

    2 Sources

    Yuval Reif @ COLM2026@YuvalReif"In a hole in the ground, there lived a hobbit." BPE spends 13 tokens on this line, 7 of them on "in", "a", "the" and punctuation. CoBPE attaches those to their words: 6 tokens, same text. Across English: 30% shorter sequences, better LLMs at the same compute. #COLM2026 🧵4h
    Alisa Liu@alisawufflesRT @YuvalReif: "In a hole in the ground, there lived a hobbit." BPE spends 13 tokens on this line, 7 of them on "in", "a", "the" and punct…2h

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    2 Sources

    Yuval Reif @ COLM2026@YuvalReif"In a hole in the ground, there lived a hobbit." BPE spends 13 tokens on this line, 7 of them on "in", "a", "the" and punctuation. CoBPE attaches those to their words: 6 tokens, same text. Across English: 30% shorter sequences, better LLMs at the same compute. #COLM2026 🧵4h
    Alisa Liu@alisawufflesRT @YuvalReif: "In a hole in the ground, there lived a hobbit." BPE spends 13 tokens on this line, 7 of them on "in", "a", "the" and punct…2h