Chatterbox, created by Resemble AI, is a leading open-source voice cloning model licensed under MIT. It delivers human-like speech synthesis with just a few seconds of recorded audio, enabling zero-shot cloning and real-time text-to-speech or speech-to-speech conversion, all within milliseconds. What truly sets Chatterbox apart is its fine-grained emotion control, giving creators the power to adjust tone from reserved to dramatic with a simple setting. It also embeds imperceptible watermarks in audio outputs for responsible usage. In blind listening tests, 63.75% of participants preferred Chatterbox's speech quality over leading alternatives like ElevenLabs.

Fully open-source and developer-friendly, Chatterbox can be installed via pip or run from GitHub, and even supports on-premise deployment. It’s designed for real-time applications, making it ideal for voice assistants, games, accessibility solutions, and interactive media. Whether you're building a voice UI, game character, or audio content pipeline, Chatterbox combines flexibility, performance, and transparency, all powered by a vibrant open-source community.