Cetvel: A Unified Benchmark for Evaluating Language Understanding, Generation and Cultural Capacity of LLMs for Turkish

• URL: http://arxiv.org/abs/2508.16431v1
• Date: Fri, 22 Aug 2025 14:42:50 GMT
• Title: Cetvel: A Unified Benchmark for Evaluating Language Understanding, Generation and Cultural Capacity of LLMs for Turkish
• Authors: Yakup Abrek Er, Ilker Kesen, Gözde Gül Şahin, Aykut Erdem,
• Abstract summary: Cetvel is a benchmark designed to evaluate large language models (LLMs) in Turkish.<n>It combines a broad range of both discriminative and generative tasks ensuring content that reflects the linguistic and cultural richness of Turkish language.
• Score: 9.111556632499472
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: We introduce Cetvel, a comprehensive benchmark designed to evaluate large language models (LLMs) in Turkish. Existing Turkish benchmarks often lack either task diversity or culturally relevant content, or both. Cetvel addresses these gaps by combining a broad range of both discriminative and generative tasks ensuring content that reflects the linguistic and cultural richness of Turkish language. Cetvel covers 23 tasks grouped into seven categories, including tasks such as grammatical error correction, machine translation, and question answering rooted in Turkish history and idiomatic language. We evaluate 33 open-weight LLMs (up to 70B parameters) covering different model families and instruction paradigms. Our experiments reveal that Turkish-centric instruction-tuned models generally underperform relative to multilingual or general-purpose models (e.g. Llama 3 and Mistral), despite being tailored for the language. Moreover, we show that tasks such as grammatical error correction and extractive question answering are particularly discriminative in differentiating model capabilities. Cetvel offers a comprehensive and culturally grounded evaluation suite for advancing the development and assessment of LLMs in Turkish.

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