Arena Elo vs pronunciation: top-preference Sonic 3.6 scores just 74.5% accuracy

ArtificialAnlys · x · 2026-09-22

Artificial Analysis compared pronunciation robustness against Provider Voice Arena preference rankings: Sonic 3.6 has the highest Elo (1276) but scores just 74.5% on pronunciation; Gemini 3.1 Flash TTS hits 88.1% at 1201 Elo; SpaceXAI TTS scores 87.6% at 1131 Elo; Breeze TTS 2 matches Gemini's Elo (1205) but manages only 73.6%.

Related event: Artificial Analysis Launches Pronunciation Robustness Benchmark for TTS Models(6 posts)→

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