AssemblyAI launches first TTS model: #12 in voice arena, fastest at 162 chars/sec, $15/1M
ArtificialAnlys · x · 2026-10-29
AssemblyAI launched its first text-to-speech model, AssemblyAI-TTS-1, evaluated by Artificial Analysis across multiple arenas:
- Provider Voice arena: Elo 1,227 (1,626 appearances), ranking #12—behind Breeze TTS 2 (1,228), ahead of Mistral Voxtral 3 TTS (1,221) and Inworld Realtime TTS-2 Flash (1,218)
- Controlled Voice: 1,110, ranking #10; #6 in Knowledge Sharing; pronunciation robustness 81.7%, ranking #16
- Speed: 162 characters/second, faster than Cartesia Sonic 3.6 (148.6) and Voxtral 3 TTS (112.3)
- Pricing: $15/1M characters—only 2 of the 11 models ranked above it cost less (vs Eleven v4 at $80 and Sonic 3.6 at $49)
Overall a mid-tier quality entrant competing on speed and price.
Related event: AssemblyAI Launches Its First TTS Model, TTS-1(5 posts)→
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