ResearchBenchmarksCross-lingual naturalness on CSS10Follow3.91Naturalness Score (ES)MVC3.46283.57893.6953.8111Mar 31, 2026Evaluation ResultsMethodMethodLinksNaturalness Score (ES)Naturalness Score (DE)Naturalness Score (FR)MVC2026.033.913.823.93StyleTTS22026.033.843.763.85VITS2026.033.483.393.46