OpenAI's latest model 'o1-preview' achieved a 1st grade ranking by scoring 97 points on the 2025 College Scholastic Ability Test Korean section. This represents significant progress from the 3rd to 9th grade levels shown by previous AI models, demonstrating improved ability to solve College Scholastic Ability Test questions requiring complex reasoning. The o1-preview exhibited the characteristic of carefully analyzing passages and deriving correct answers through step-by-step reasoning processes, though it tends to take longer to produce answers compared to existing models. As evaluations suggest that AI's Korean language ability has approached human levels, expectations for future AI technology advancement are rising.