Chatterbox
Resemble AIResemble AI's open text-to-speech family: zero-shot voice cloning with an emotion-exaggeration control, the original English model, Turbo and Nano variants, and Chatterbox Multilingual V3 across 23 languages. Every output carries Resemble's Perth watermark.
Code and weights are MIT. Resemble's hosted Chatterbox HD is a separate, closed product.
Openness
3 high confidence- weights
- open(checkpoints on the Hub, ungated)
- data
- described(0.5M hours of cleaned data, not released)
- code
- partial(inference code only)
- license
- MIT(OSI)
Chatterbox is MIT-licensed, code and weights alike, which is OSI-approved. Resemble sizes its training data at half a million hours but publishes neither the data nor a training pipeline.
- https://huggingface.co/api/models/ResembleAI/chatterbox recorded 2026-09-27
"license:mit" tag and "gated":false.
- https://huggingface.co/ResembleAI/chatterbox/raw/main/README.md recorded 2026-09-27
Card front matter "license: mit"; "Trained on 0.5M hours of cleaned data".
- https://raw.githubusercontent.com/resemble-ai/chatterbox/HEAD/LICENSE recorded 2026-09-27
LICENSE body: "MIT License" / "Copyright (c) 2025 Resemble AI".
- https://raw.githubusercontent.com/resemble-ai/chatterbox/HEAD/README.md recorded 2026-09-27
README covers "pip install chatterbox-tts" and inference with "from_pretrained"; no training instructions.
Adoption
4 high confidenceHugging Face downloads of the main repository. The chatterbox-tts package is marked as not a separate channel because it loads the Hub checkpoints.
- https://huggingface.co/api/models/ResembleAI/chatterbox recorded 2026-09-27
"downloads":1721415 for ResembleAI/chatterbox.
Capability
2 low confidenceListeners prefer most commercial voices, and Kokoro, over the original Chatterbox. Its draw is voice cloning and emotion control, which the arena does not score, and its newer models are unrated.
- https://artificialanalysis.ai/text-to-speech/leaderboard recorded 2026-09-27
Leaderboard entry "name":"Chatterbox" (creator Resemble AI) with "elo":1023.02 and "openWeights":true.
Verified 2026-09-27