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CyrillicQA: The Influence of Phonetically Encoded Secret Language on LLM Performance

A new study, CyrillicQA, finds that large language models (LLMs) perform best on standard-language inputs from Latin-alphabet languages with large speaker populations, while disadvantaging other language varieties, and tests whether they can decode phonetically encoded secret language as humans do. The paper, submitted to arXiv on 20 Aug 2026, explores LLMs' capacity for abstraction in preserving endangered languages.

read1 min views1 publishedAug 25, 2026
CyrillicQA: The Influence of Phonetically Encoded Secret Language on LLM Performance
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[Submitted on 20 Aug 2026]


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Abstract:Due to the selection of their training data, large language models (LLMs) perform best on standard-language inputs from languages using the Latin alphabet with large speaker populations, while disadvantaging other language varieties. Nevertheless, they can also be a versatile tool for preserving precisely such endangered languages. But do they also possess the necessary creativity and capacity for abstraction to decode phonetically encoded language the same way humans do?

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