AssemblyAI-TTS-1 scores 81.7% on pronunciation robustness, shorthand expansion is its weak spot
ArtificialAnlys · x · 2026-10-29
On Artificial Analysis's Pronunciation Robustness benchmark (human reviewers judging challenging text), AssemblyAI-TTS-1 scored 81.7% overall, ranking #16:
- Standalone terms: 92.4% (#11; leader Fish Audio Drama 3 Preview at 95.9%)
- Contextually appropriate: 90.4% (#16; leader Gemini 3.8 Flash TTS at 97.9%)
- Preserving exact sequences: 81.5% (#6; leader HeyGen Voice Turbo at 91.8%)
- Expanding shorthand: 73.8% (#17; leader Ming-3.0-tts at 96.5%) — its clear weak spot
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