OpenVoice is an advanced instant voice cloning tool, requiring only a short audio clip to replicate a speaker's voice with versatile control over styles like emotion, accent, rhythm, pauses, and intonation. It accurately clones tone color and generates speech in multiple languages and accents. Notably, it achieves zero-shot cross-lingual voice cloning for languages not in its training set. OpenVoice is computationally efficient, offering cost savings compared to other APIs with inferior performance. The tool's flexibility extends to precise voice style control, showcasing emotions and accents, making it a comprehensive and accessible solution for voice cloning across diverse linguistic and stylistic parameters.