Resemble AI

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.

Hugging 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.

Listeners 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.