Accent gaps quantified: Lightning V3.1 Pro scores 94 Elo higher in US English
ArtificialAnlys · x · 2026-11-07
Artificial Analysis breaks down US vs UK English Elo gaps: Lightning V3.1 Pro scores 94 Elo points higher in US English, Qwen-Audio-3.1-TTS-Plus +66; Soniox TTS Real-Time v2 and Speech 2.8 Turbo favor UK English by 51 and 49 points. The takeaway: evaluate TTS on the accent relevant to your use case, not overall rankings.
Related event: Accent Matters: 49 TTS Models Tested in Controlled Voice Arena(4 posts)→
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