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Chatterbox

MIT

English voice cloning with emotion-exaggeration controls

Chatterbox is Resemble AI's open-source TTS model — a 0.5B-parameter system with zero-shot voice cloning from a few seconds of reference audio and a unique emotion-exaggeration control. In blind tests it's frequently preferred over leading commercial systems. Outputs include Resemble's PerTh watermark.

Looking for the newer release? See Chatterbox Turbo → These recordings remain labeled with their original version.

Hear Chatterbox

Original English Chatterbox 500M · Same three scripts across the directory.

Run it yourself Try your own text

Best for: English voice cloning with controllable exaggeration.

Permissive model license: The official Chatterbox weights and code declare MIT. Use authorized reference speech; acknowledgements to an architecture are not themselves a license grant for other assets.

Code: MIT. Weights: MIT. License sources checked 2026-09-20. Source 1 Source 2 Source 3

Before you choose: This page represents the original English model. Turbo and Multilingual V3 are separate releases; samples here are not V3.

Details reviewed 2026-09-14. Hardware figures are estimates unless a benchmark is linked.

Compare with similar

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Fish Speech 1.5Listen side-by-side →Qwen3-TTSListen side-by-side →Higgs Audio v2Listen side-by-side →

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Voices

1 voice

Female

Defaultdefault

american

The scripts

Neutral

“The quick brown fox jumps over the lazy dog near the riverbank.”

Emotional

“I can't believe you actually did it. This is incredible!”

Numbers & Dates

“On March 14th, 2025, the team raised $4.2 million at a 38% margin.”

Run Chatterbox

pip install chatterbox-tts

Sources & setup details

Chatterbox FAQ

Do I need a GPU to run Chatterbox?

The directory lists roughly 8 GB of VRAM as a historical estimate. Check the model documentation for your checkpoint and runtime.

Can Chatterbox clone voices?

Yes — Chatterbox supports voice cloning from reference audio.

What license is Chatterbox released under?

Chatterbox is released under the MIT license. Always check the repository for the exact terms — some models license code and weights separately.

What languages does Chatterbox support?

Chatterbox supports English.

Is there a hosted Chatterbox API?

Yes. OpenSpeech Cloud offers Chatterbox in its paid English preset-voice studio and API, using prepaid credits. See the Cloud documentation for current availability.