Chatterbox TTS API provides a local text-to-speech API server that is compatible with the OpenAI TTS API, allowing users to generate multilingual, voice-cloned speech. Designed as a drop-in replacement for the OpenAI TTS API, it enables integration with applications that already use the OpenAI interface, such as Open WebUI and AnythingLLM, without requiring code changes. The platform addresses the need for customizable, on-premises speech synthesis with support for a wide range of languages and personalized voice options.
A notable feature of Chatterbox TTS API is its native multilingual voice cloning, supporting 22 languages including Arabic, Danish, German, Greek, English, Spanish, Finnish, French, Hebrew, Hindi, Italian, Japanese, Korean, Malay, Dutch, Norwegian, Polish, Portuguese, Russian, Swedish, Swahili, and Turkish. Users can upload voice samples and assign them to specific languages for optimal language-aware voice synthesis. The system automatically detects and applies the assigned language during speech generation, ensuring accurate and natural-sounding results across different linguistic contexts.
The tool offers a set of features aimed at facilitating the management and deployment of text-to-speech capabilities. These include a voice library management system for uploading and organizing custom voices by name, smart text processing with automatic chunking for handling long texts, and a real-time status monitor to track TTS progress, statistics, and history. Chatterbox TTS API also provides a clean and intuitive web interface for generating speech and managing voices.
For deployment, Chatterbox TTS API supports local installation and is Docker-ready, allowing for containerization with persistent voice storage. The installation process is accessible through standard commands, and the platform is available via its GitHub repository. Chatterbox TTS API is not affiliated with Resemble AI.
In the Voice, TTS & speech space, Chatterbox TTS API takes a focused approach. Enabling developers to generate multilingual, voice-cloned speech locally or via API without relying on proprietary cloud services. Chatterbox TTS API is an open-source project aimed at developers building TTS or AI voice applications. The project is open source (AGPL-3.0). Chatterbox TTS API is available on the web, the command line, and API, and it can be self-hosted.
It is developed by Chatterbox Maintainers, and the product first shipped in 2025. The project is developed in the open on GitHub with 616 stars. Across PulseGate's embedding index, Chatterbox TTS API has few near neighbours, marking it as relatively distinct. Among its 6 catalogued features are voice cloning, multilingual support, and OpenAI-compatible API. It exposes integrations via a public API.
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