MAIDENHEAD, England, April 13, 2026–RWS (RWS.L), a global AI solutions company, today announced findings from its latest TrainAI Multilingual LLM Synthetic Data Generation Study, revealing that while leading large language models (LLMs) are closing the global language gap, their performance from one model generation to the next can be unpredictable. The findings underscore the need for continuous, expert-led evaluation to ensure that enterprises select the right model for their specific busines