diodiogod-TTS-Audio-Suite/docs/ENGINE_COMPARISON.md

TTS Engines Reference Tables

Engine Comparison

Engine	Models	Size	TTS	SRT	VC	ASR	Special Features	Languages
F5-TTS	Base, v1, E2TTS + 8 lang models	~1.2GB each	✅	✅	❌	❌	Targeted Word/Speech Editing, Speed control	🇺🇸​🇩🇪​🇪🇸​🇫🇷​🇮🇹​🇯🇵​🇧🇷​🇵🇱​🇮🇳​🇹🇭
ChatterBox	EN, DE×3, IT, FR, RU, HY, KA, JA, KO, NO	~4.3GB	✅	✅	✅	❌	Expressiveness slider	🇺🇸​🇩🇪​🇫🇷​🇮🇹​🇯🇵​🇰🇷​🇷🇺​🇳🇴​🇦🇲​🇬🇪
ChatterBox 23L	v1, v2, Vietnamese (Viterbox)	~4.3GB	✅	✅	✅	❌	24 languages in single model, emotion tokens (v2 - doesn't work)	🇺🇸​🇨🇳​🇩🇪​🇪🇸​🇫🇷​🇮🇹​🇯🇵​🇰🇷​🇷🇺​🇵🇹​🇵🇱​🇮🇳​🇦🇪​🇹🇷​🇹🇭​🇳🇴​🇻🇳​🇩🇰​🇫🇮​🇬🇷​🇮🇱​🇲🇾​🇳🇱​🇸🇪​🇰🇪(+9)
VibeVoice	1.5B, 7B, KugelAudio-0 (7B), Hindi-1.5B/7B	5.4GB / 18GB	✅	✅	❌	❌	90-min long-form, Native 4-speaker (Base models), Multilingual (KugelAudio), 4-bit quantization	🇺🇸​🇨🇳​🇩🇪​🇪🇸​🇫🇷​🇮🇹​🇯🇵​🇰🇷​🇷🇺​🇧🇷​🇵🇱​🇮🇳​🇦🇪​🇹🇷​🇹🇭​🇳🇴​🇻🇳​🇦🇲​🇬🇪​🇩🇰​🇫🇮​🇬🇷​🇮🇱​🇲🇾​🇳🇱​🇸🇪​🇰🇪
Higgs Audio 2	3B	~9GB	✅	✅	❌	❌	3 multi-speaker, CUDA graphs (55+ tokens/sec)	🇺🇸​🇨🇳​🇩🇪​🇪🇸​🇰🇷
IndexTTS-2	IndexTTS-2	~4.7GB	✅	✅	❌	❌	Emotion Control: 8 vectors, Text as reference, Audio as reference	🇺🇸​🇨🇳​🇯🇵
CosyVoice3	0.5B, 0.5B-RL	~5.4GB	✅	✅	✅	❌	Paralinguistic tags	🇺🇸​🇨🇳​🇯🇵​🇰🇷
Qwen3-TTS	0.6B, 1.7B (CustomVoice/VoiceDesign/Base)	~3-6GB	✅	✅	❌	✅	Voice design, ASR (Automatic Speech Recognition)	🇺🇸​🇨🇳​🇩🇪​🇪🇸​🇫🇷​🇮🇹​🇯🇵​🇰🇷​🇷🇺​🇵🇹
Step Audio EditX	3B LLM + CosyVoice	~7GB	✅	✅	❌	❌	Second Pass Speech Editing Node: 14 emotions, 32 speaking styles, Paralinguistic effects	🇺🇸​🇨🇳​🇯🇵​🇰🇷
RVC	Community .pth	100-300MB	❌	❌	✅	❌	Real-time VC, Pitch shift (±14), 6 HuBERT models, Language-independent	🇺🇸​🇨🇳​🇩🇪​🇪🇸​🇫🇷​🇮🇹​🇯🇵​🇰🇷​🇷🇺​🇧🇷​🇵🇱​🇮🇳​🇦🇪​🇹🇷​🇹🇭​🇳🇴​🇻🇳​🇦🇲​🇬🇪​🇩🇰​🇫🇮​🇬🇷​🇮🇱​🇲🇾​🇳🇱​🇸🇪​🇰🇪