Large Language Models for Mental Health: A Multilingual Evaluation

• URL: http://arxiv.org/abs/2602.02440v1
• Date: Mon, 02 Feb 2026 18:34:53 GMT
• Title: Large Language Models for Mental Health: A Multilingual Evaluation
• Authors: Nishat Raihan, Sadiya Sayara Chowdhury Puspo, Ana-Maria Bucur, Stevie Chancellor, Marcos Zampieri,
• Abstract summary: We evaluate proprietary and open-source Large Language Models (LLMs) on eight mental health datasets in various languages.<n>We compare LLM performance in zero-shot, few-shot, and fine-tuned settings against conventional NLP baselines.<n>We assess translation quality across language families and typologies to understand its influence on LLM performance.
• Score: 17.886031066436292
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Large Language Models (LLMs) have remarkable capabilities across NLP tasks. However, their performance in multilingual contexts, especially within the mental health domain, has not been thoroughly explored. In this paper, we evaluate proprietary and open-source LLMs on eight mental health datasets in various languages, as well as their machine-translated (MT) counterparts. We compare LLM performance in zero-shot, few-shot, and fine-tuned settings against conventional NLP baselines that do not employ LLMs. In addition, we assess translation quality across language families and typologies to understand its influence on LLM performance. Proprietary LLMs and fine-tuned open-source LLMs achieve competitive F1 scores on several datasets, often surpassing state-of-the-art results. However, performance on MT data is generally lower, and the extent of this decline varies by language and typology. This variation highlights both the strengths of LLMs in handling mental health tasks in languages other than English and their limitations when translation quality introduces structural or lexical mismatches.

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