Text-to-Speech on SeedTTS en (test)
1.521WERIndexTTS 2
Evaluation results
| Method | Links | |||||
|---|---|---|---|---|---|---|
| IndexTTS 2mode=Zero-shot2026.01 | 1.521 | — | — | 0.86 | — | |
| FireRedTTS-2mode=Zero-shot2026.01 | 1.652 | — | — | 0.782 | — | |
| IndexTTS 2.5-RLmode=Reinforcement learning-based fine-tuning2026.01 | 1.732 | — | — | 0.847 | — | |
| IndexTTS 2.5mode=Zero-shot2026.01 | 1.889 | — | — | 0.855 | — | |
| Ground Truthmode=Zero-shot2026.01 | 1.897 | — | — | 0.82 | — | |
| CosyVoice 3mode=Zero-shot2026.01 | 2.02 | — | — | 0.811 | — | |
| Ground Truth#Hz=-, Data (#hours)=-, PT?=false2025.08 | 2.143 | 3.523 | — | — | 0.73 | |
| MaskGCT#Hz=50, Data (#hours)=101K, PT?=false2025.08 | 2.403 | 3.59 | — | — | 0.711 | |
| CosyVoice2#Hz=25, Data (#hours)=167K, PT?=true2025.08 | 2.89 | 4.1 | — | — | 0.66 | |
| F5-TTS#Hz=-, Data (#hours)=101K, PT?=false2025.08 | 3.015 | 3.508 | — | — | 0.629 | |
| Vevo2#Hz=12.5, Data (#hours)=101K, 7K, PT?=true2025.08 | 3.639 | 3.814 | — | — | 0.693 | |
| Vevo2-base#Hz=12.5, Data (#hours)=101K, 7K, PT?=false2025.08 | 5.77 | 3.763 | — | — | 0.686 | |
| Vevo2-base#Hz=12.5, Data (#hours)=101K, PT?=false2025.08 | 5.846 | 3.749 | — | — | 0.687 | |
| Genhancer confidence-based filteringFiltering threshold=top 70%, # Utterances=1960912026.01 | 18.14 | 3.76 | 3.15 | — | — | |
| Genhancer confidence-based filteringFiltering threshold=top 60%, # Utterances=1680782026.01 | 18.78 | 3.73 | 3.12 | — | — | |
| Genhancer confidence-based filteringFiltering threshold=top 80%, # Utterances=2241042026.01 | 18.79 | 3.8 | 3.17 | — | — | |
| Genhancer confidence-based filteringFiltering threshold=top 90%, # Utterances=2521172026.01 | 19.29 | 3.76 | 3.14 | — | — | |
| Genhancer confidence-based filteringFiltering threshold=top 50%, # Utterances=1400652026.01 | 20.18 | 3.68 | 3.11 | — | — | |
| Enhanced (unfiltered)# Utterances=280130, Data curation=Enhanced but unfiltered data2026.01 | 20.45 | 3.64 | 3.1 | — | — | |
| Source (noisy)# Utterances=280130, Data curation=Noisy source data2026.01 | 21.31 | 2.73 | 2.74 | — | — | |
| Vevo2-base#Hz=12.5, Data (#hours)=7K, PT?=false2025.08 | 42.15 | 3.26 | — | — | 0.581 |