| System,Training Data,🌐 Multilingual,📚 Training Amount (k hours),🧠 Num. Parameters (M),🎯 Target Repr.,📖 LibriVox Only,🔄 NAR,🔁 AR,🔡 G2P,🧩 Language Model,🎵 Prosody Prediction,🌫 Diffusion,⏱️ Delay Pattern | |
| Bark,Unknown,✅,Unknown,240,Audio Codec Code,❌,✅,✅,❌,✅,❌,❌,❌ | |
| E2-TTS,Emilia,✅,95,330,Mel Spectrogram,❌,✅,❌,✅,❌,✅,❌,❌ | |
| F5-TTS,Emilia,✅,95,330,Mel Spectrogram,❌,✅,❌,✅,❌,❌,✅,❌ | |
| Fish (1.4),"LibriLight, PlayerFM, StarRail...?",✅,700,500,Audio Codec Code,❌,❌,✅,❌,✅,❌,❌,❌ | |
| GPT-SoVITS,"Chinese, English, Japanese (1000+700+300 hrs)",✅,2,200,Audio Codec Code,❌,✅,✅,✅,✅,❌,❌,❌ | |
| Hierspeech++,"LibriTTS, LibriLight, Expresso, MSSS, NIKL",✅,2.7,97,Waveform,❌,✅,❌,✅,❌,✅,❌,❌ | |
| MetaVoice,Unknown,❌,100,1000,Audio Codec Code,❌,✅,✅,❌,✅,❌,❌,✅ | |
| NaturalSpeech2,LibriTTS,❌,0.58,380,Audio Codec Code,✅,✅,❌,✅,❌,✅,✅,❌ | |
| OpenVoice,Unknown,❌,0.6,73,Mel Spectrogram,❌,✅,❌,✅,❌,✅,❌,❌ | |
| ParlerTTS,"MLS, LibriTTS",❌,23,2200,Audio Codec Code,✅,❌,✅,❌,✅,❌,❌,✅ | |
| Pheme,"GigaSpeech, MLS, LibriTTS",❌,11,300,Audio Codec Code,❌,✅,✅,✅,✅,❌,❌,❌ | |
| SpeechT5,"LibriTTS, LibriSpeech",❌,1.4,144,Mel Spectrogram,✅,❌,✅,❌,❌,❌,❌,❌ | |
| StyleTTS2,LibriTTS,❌,0.24,191,Mel Spectrogram,✅,✅,❌,✅,❌,✅,✅,❌ | |
| TorToiSe,"LibriTTS, HifiTTS, Podcasts + Audiobooks",❌,49.5,960,Mel Spectrogram,❌,✅,✅,❌,✅,❌,✅,❌ | |
| VallEv1,LibriLight,❌,6,370,Audio Codec Code,✅,❌,✅,✅,✅,❌,❌,❌ | |
| VoiceCraft,GigaSpeech,❌,9,830,Audio Codec Code,❌,❌,✅,✅,✅,❌,❌,✅ | |
| WhisperSpeech,MLS,✅,80,2054,Audio Codec Code,✅,✅,✅,❌,✅,❌,❌,❌ | |
| XTTSv2,"LibriTTS, Common Voice, Internal",✅,27,456,Audio Codec Code (Own),❌,❌,✅,❌,✅,❌,❌,❌ | |
| xVASynth,Unknown,✅,Unknown, , , , , , , , , , |