Open Source

TTS.ai is built on open-source AI models and contributes back to the community. All our SDKs and tools are open source under the MIT license.

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Our Open Source Projects

Python SDK

MIT

Official Python SDK for TTS.ai. Sync and async clients, type hints, automatic retries, and support for all API endpoints including TTS, STT, voice cloning, and batch processing.

pip install ttsai

tts-python

JavaScript SDK

MIT

Official JavaScript/Node.js SDK for TTS.ai. Zero dependencies, TypeScript definitions included. Supports TTS, STT, voice cloning, batch processing, and all audio tools.

npm install @ttsainpm/ttsai

tts-js

Voice Chat Widget

MIT

Embeddable AI voice chat widget. Add a voice agent to any website with one script tag. Customizable colors, position, and greeting. Responsive design with mobile support.

<script src="https://tts.ai/widget/chat.js" data-agent="your-slug"></script>

tts-widget

Open Source Models We Run

Every TTS model on our platform is open source. We believe in transparency and giving back. Here are some of the models powering TTS.ai:

Kokoro

High-quality multilingual TTS. Our most popular free model with 50+ voices across 8 languages.

Apache 2.0 Free Tier

Chatterbox

Voice cloning with just 5 seconds of reference audio. Industry-leading zero-shot voice replication.

MIT Voice Cloning

Sesame CSM

Conversational speech model with natural turn-taking and expressive prosody. Great for dialogue.

Apache 2.0 Premium

CosyVoice 2

Alibaba's multilingual TTS with voice cloning. Supports Chinese, English, Japanese, Korean, and more.

Apache 2.0 Voice Cloning

Faster Whisper

CTranslate2 implementation of OpenAI's Whisper. Fast, accurate speech-to-text in 99 languages.

MIT Speech to Text

Orpheus

Built with Llama. Expressive speech with emotion tags for laughing, sighing, and more. Great for audiobooks.

Llama 3.2 Standard

Try All Models GitHub HuggingFace

Find Us

GitHub
ttsaigit

🤗 HuggingFace
ttsdotai

PyPI
pip install ttsai

npm
@ttsainpm/ttsai

Why Open Source?

Transparency

Know exactly what models process your data. No black boxes, no proprietary lock-in. Every model we use is publicly auditable.

Community

Our SDKs and tools are MIT-licensed. Contribute, fork, or build on top of them. We welcome pull requests and feedback.

No Lock-In

Switch models or self-host anytime. Our OpenAI-compatible API means you can migrate with minimal code changes.

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