Experience Stronger Korean Fluency In The New Solar Llms

Upstage's April 2025 Solar update focused on how naturally its models communicate in Korean. The company reported that Solar Pro's internal fluency score rose from 74.4 to 82.0, while Solar Mini's rose from 81.2 to 82.1.

The company describes this measure as covering naturalness, clarity, and alignment with the user's intent. These reported results indicate improvement on its own Korean-language assessment, with a larger change for Pro. They do not establish a corresponding percentage improvement in every Korean task.