What question did this study set out to answer?

The study aims to optimize prompt design to reduce hallucination rates in large language models across different languages.

July 15, 2026Open Access

Optimizing Prompt Design for Efficient Hallucination Reduction: An Experimental Study on Language, Task Difficulty, and Prompt Length

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JSJhon Thimoty Junior Sihite

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Implication

Experimental study examines the impact of prompt design on hallucination rates in multilingual settings, indicating varied effectiveness across languages.

Key Points

The study aims to optimize prompt design to reduce hallucination rates in large language models across different languages.
Developed the MultiLang-HalluBench evaluation benchmark with 90 questions in English, Indonesian, and Mandarin Chinese.
Conducted evaluations under three prompt conditions: zero-shot, instructed anti-hallucination, and chain-of-thought.
Collected and analyzed 270 scored data points to assess performance and effectiveness.
Identified a logarithmic diminishing-returns pattern in prompt effectiveness, with the transition from zero-shot to instructed prompting accounting for 86.3% improvement.
Classified hallucinations into two categories: reasoning errors, which can be mitigated by prompts, and knowledge errors, which are more resistant.
Found a significant performance gap for Indonesian, indicating training data imbalances cannot be countered by prompt improvements.

Cite This Study

Jhon Thimoty Junior Sihite (2026) studied this question.

synapsesocial.com/papers/6a5723fd88b21df875480765 https://doi.org/10.5281/zenodo.21339175

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Implication

Experimental study examines the impact of prompt design on hallucination rates in multilingual settings, indicating varied effectiveness across languages.

Optimizing Prompt Design for Efficient Hallucination Reduction: An Experimental Study on Language, Task Difficulty, and Prompt Length

Discussion

Member takes

Implication

Key Points

Cite This Study

Optimizing Prompt Design for Efficient Hallucination Reduction: An Experimental Study on Language, Task Difficulty, and Prompt Length

Discussion

Member takes

Implication

Key Points

Cite This Study

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