Moderate
Speed
Very Good
Quality
Yes
Cloning
10
Languages
About OpenVoice
OpenVoice is a versatile instant voice cloning model that allows fine-grained control over speaking style. Unlike other cloning models, OpenVoice separates voice identity from speaking style, allowing you to take a cloned voice and apply different tones - cheerful, sad, angry, excited, or whispering - without new reference audio.
Key Features
Instant Cloning
Clone any voice from just a few seconds of audio.
Tone Control
Apply cheerful, sad, angry, excited, or whisper tones.
Style Transfer
Separate voice identity from speaking style for flexibility.
Cross-Lingual
Use cloned voices across different languages.
Fast Processing
Efficient inference for quick voice generation.
Open Source
MIT licensed for commercial applications.
Use Cases
Emotional Content
Character Animation
Interactive Games
Audiobook Narration
Marketing Videos
Virtual Assistants
Frequently Asked Questions
OpenVoice is an advanced voice cloning model that uniquely separates voice identity from speaking style. This allows you to clone a voice and then apply different emotional tones without needing new reference audio for each emotion.
OpenVoice is open-source under MIT license. On TextToSpeechAI, we charge 50 credits per 1000 characters (Ultra tier) due to its advanced tone control capabilities and compute requirements.
OpenVoice supports around 10 languages including English, Chinese, Japanese, Korean, and several European languages. It features cross-lingual cloning - clone a voice in one language and use it in another.
OpenVoice has moderate generation speed, typically processing a sentence in 2-4 seconds on GPU. The two-stage architecture (base synthesis + tone conversion) is efficient while enabling unique style control.
After cloning a voice, you can apply any of 9 tone styles: default, friendly, cheerful, excited, sad, angry, terrified, shouting, or whispering. The same cloned voice speaks differently based on your chosen tone.
OpenVoice produces very good quality audio with clear voice reproduction. The tone transfer maintains voice identity while convincingly changing emotional delivery. Quality is comparable to F5-TTS.
OpenVoice requires 3-6GB of VRAM depending on batch size. It runs well on mid-range GPUs like RTX 3060. Memory usage is reasonable for its advanced capabilities.
Yes, OpenVoice is MIT licensed and supports commercial use. As with all cloning, ensure you have proper rights to clone voices used in commercial projects.
Create a cloned voice by uploading reference audio, then specify a tone style in your API request. The API applies your chosen emotional tone to the cloned voice automatically.
OpenVoice outputs WAV audio natively. Through TextToSpeechAI, request MP3, WAV, or OGG formats as needed.
Yes, you can adjust speaking speed. Pitch and emotion are controlled through tone style selection rather than direct parameters, giving more natural emotional variation.
OpenVoice is unique in its tone control capability - no other model offers the same level of emotional style control for cloned voices. For highest quality, use StyleTTS 2. For fastest cloning, use F5-TTS.
Technical Specs
- Generation Speed Moderate
- Output Quality Very Good
- Voice Cloning Supported
- Languages 10
- GPU VRAM 3-6GB
- Credits/1000 chars 50