ChatTTS vs StreamingKokoroJS
Dialogue speech synthesis compared with local browser TTS
ChatTTS is a dialogue-oriented speech synthesis model with multiple speakers and delivery controls, while StreamingKokoroJS is a browser app that generates and streams speech locally with Kokoro-82M. ChatTTS centers on model use and conversational audio; StreamingKokoroJS centers on private, client-side listening and audio downloads.
ChatTTS: Generate Expressive Speech for Dialogue
ChatTTS is a generative text-to-speech model built for dialogue, including assistant-style speech. It supports Chinese and English, multiple speakers, and controls for prosody such as pauses and laughter.
StreamingKokoroJS: Generate Speech Locally in Your Browser
A browser-based app that turns text into streaming speech with the Kokoro model, keeping processing on your device. It offers WebGPU acceleration with a WebAssembly fallback, but its year-plus without commits makes long-term maintenance uncertain.
| ChatTTS | StreamingKokoroJS | |
|---|---|---|
| Language | Python | JavaScript |
| License | AGPL-3.0 | Apache-2.0 |
| Stars | 39.9k | 372 |
| Forks | 4.3k | 39 |
| Last analyzed | Oct 3, 2026 | Oct 10, 2026 |
Key differences
- ChatTTS supports Chinese and English, with English described as experimental; StreamingKokoroJS offers voice styles for different languages.
- ChatTTS includes multiple speaker options and controls for cues such as pauses and laughter; StreamingKokoroJS focuses on chunked browser playback and audio downloads.
- ChatTTS provides Python inference, command-line and web UI examples; StreamingKokoroJS runs in the browser using WebGPU when available and a WebAssembly fallback.
- StreamingKokoroJS generates speech on the user's device without sending text to a server, while ChatTTS is presented as model infrastructure for running inference.
- ChatTTS code uses AGPLv3+ and its model is separately licensed under CC BY-NC 4.0; StreamingKokoroJS uses Apache-2.0.
- The supplied repository metadata lists 39.9k stars for ChatTTS and 373 for StreamingKokoroJS.
Choose ChatTTS if you…
- need dialogue-focused speech with multiple speakers and expressive delivery controls.
- want to explore Chinese or English conversational speech synthesis using Python or the provided examples.
- can work within the model's research-use license and local GPU requirements.
Choose StreamingKokoroJS if you…
- want to turn pasted text into speech locally in a browser without sending it to a server.
- need audio to stream as it is generated or want to download the result.
- can use a supported browser and device, and accommodate the initial model download.
Compare the numbers side by side, or add more projects
This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.