Mike Gold

Chatterbox Open-Source TTS Model Outperforms ElevenLabs

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Posted on X by Resemble AI After 2 years in production serving millions of requests, we're open sourcing Chatterbox - our state-of-the-art TTS model that just beat ElevenLabs in blind evaluations.

In recent testing, 63.75% of listeners preferred Chatterbox over ElevenLabs. Not only is it free and open

Research Notes on Chatterbox: Open-Source TTS Model

Overview

Chatterbox is an open-source text-to-speech (TTS) model developed by Resemble AI, which has been in production for over two years. It outperforms ElevenLabs in blind evaluations, with 63.75% of listeners preferring Chatterbox. The model is freely available on multiple platforms, including GitHub, Hugging Face, and the official Resemble AI website.

Technical Analysis

Chatterbox utilizes a neural network-based architecture optimized for efficiency and quality. It processes text input through multi-layered models to generate high-quality speech audio. The model supports multiple languages and offers speaker-independent voice cloning. As per Result 3, it was pre-trained on diverse datasets, ensuring adaptability across different accents and domains.

The technical implementation leverages lightweight computation, enabling fast inference even on resource-constrained devices (Result 4). Chatterbox is optimized for CPU usage with low memory requirements, making it accessible for various applications without the need for high-end hardware. It supports customization through configuration parameters, allowing users to tweak voice characteristics like pitch and speed.

Implementation Details

  • Frameworks: The model is built using TensorFlow and PyTorch, as indicated by Result 1 and Result 5.
  • Deployment: Docker containers are available for easy deployment (Result 1), alongside REST API wrappers for integration (Result 4).
  • Pre-trained Models: Available on Hugging Face Hub with inference scripts provided (Result 5).

Chatterbox competes with ElevenLabs, offering superior performance in naturalness and speaker similarity, as highlighted by Result 2. It aligns with broader trends of open-source AI models promoting accessibility and innovation for businesses and developers.

Key Takeaways

  • Superior Performance: Chatterbox outperforms ElevenLabs in listener tests ([Result 2], [Result 3]).
  • Cross-Platform Availability: Available on GitHub, Hugging Face, and Resemble AI’s official site ([Result 1], [Result 4], [Result 5]).
  • Versatile Features: Supports multi-language, speaker-independent cloning, customization options, and efficient computation ([Result 3], [Result 4]).

Further Research

Here is the 'Further Reading' section formatted as markdown bullet points:

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