Chatterbox Turbo is an open-source text-to-speech model designed for fast, expressive speech synthesis with built-in authentication capabilities. It operates as a 350M parameter model that generates audio up to 6 times faster than real-time on GPU hardware, making it suitable for production applications requiring rapid voice generation.

The model features paralinguistic prompting with text-based tags that enable natural vocal reactions like sighs, gasps, and coughs in cloned voices. It offers zero-shot voice cloning capabilities requiring only 5 seconds of reference audio without any training needed. Chatterbox Turbo includes built-in PerTh watermarking that embeds authentication data imperceptibly into generated audio using psychoacoustic principles. The model provides emotion exaggeration control allowing adjustment of intensity from monotone to dramatically expressive with a single parameter.

Chatterbox Turbo uses alignment-informed generation for faster-than-realtime inference times, achieving 75ms latency for real-time voice synthesis applications. The watermarking system operates by exploiting human audio perception to encode data into inaudible sound regions, making it difficult to detect while maintaining high audio quality. The model performs voice cloning and paralinguistic reactions naturally within the same cloned voice without requiring post-processing or manual audio editing.

The product enables developers to build voice AI applications that are both open-source and accountable through built-in authentication. It's designed for real-time applications, voice assistants, and interactive media where fast, expressive speech synthesis is required. The watermarking feature helps identify when content was created by Chatterbox Turbo while maintaining audio quality.

Chatterbox Turbo is built specifically for developers with simple pip installation, comprehensive documentation, and availability on GitHub and Hugging Face. It's trusted by developers at companies including Age of Learning, Red Games, and Netflix for production voice AI applications.