Pushing on Multilingual Reasoning Models with Language-Mixed Chain-of-Thought

arXiv — cs.CLWednesday, January 14, 2026 at 5:00:00 AM
  • Recent advancements in multilingual reasoning models have been highlighted with the introduction of Language-Mixed Chain-of-Thought (CoT), which utilizes English as an anchor to enhance reasoning in other languages, specifically Korean. The study presents the KO-REAson-35B model, which achieved state-of-the-art performance in reasoning tasks, supported by a curated dataset of Korean prompts known as Yi-Sang.
  • This development is significant as it addresses the gap in language-specific reasoning capabilities, allowing for improved performance in multilingual contexts. The KO-REAson-35B model's success indicates a potential shift in how AI can handle diverse languages, enhancing accessibility and usability for non-English speakers.
  • The exploration of language-mixed reasoning aligns with ongoing discussions in the AI community regarding the reliability of large language models (LLMs) and their training methodologies. Issues such as data contamination and the balance between reasoning and memorization are critical as researchers strive to refine LLMs, ensuring they can effectively process and generate language across various contexts without compromising accuracy.
— via World Pulse Now AI Editorial System

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