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New research probes English-Bengali performance gap in open LLMs

A new arXiv paper investigates the performance disparity between English and Bengali in open large language models (LLMs). Researchers developed a consistent pipeline to translate 8 English benchmarks into Bengali and evaluated 10 open LLMs. The study found that script fragmentation, where tokenizers break down Bengali's alphasyllabary into smaller pieces, and evaluation format adherence contribute to the performance gap. While Bengali text costs significantly more tokens than English, this cost and sequence length showed only a weak correlation with model scores. AI

IMPACT Highlights potential biases in LLM evaluations and the challenges of multilingual model performance.

RANK_REASON Academic paper on LLM performance evaluation. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CL →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

New research probes English-Bengali performance gap in open LLMs

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Academic paper on LLM performance evaluation. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.CL TIER_1 English(EN) · Shimanto Bhowmik, Tawsif Tashwar Dipto, Md Sazzad Islam, Sheryl Hsu, Tahsin Reasat ·

    Script Fragmentation and Format: What Drives the English-Bengali Performance Gap in Open LLMs?

    arXiv:2507.23248v2 Announce Type: replace Abstract: Bengali is spoken by more than 230 million people, yet no standardized instrument evaluates large language models (LLMs) on Bengali across the task categories used to benchmark frontier models. We release 8 English benchmarks tr…