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Chatterbox Nano

MIT

Compact English speech for CPU and on-device experiments.

Compact English speech for CPU and on-device experiments. Uses the Turbo class with nano=True. Performance depends on CPU and thread count.

Hear Chatterbox Nano

Chatterbox Nano 110M · official demo · synthetic Bella reference · Same three scripts across the directory.

Run it yourself

Best for: Compact English speech for CPU and on-device experiments.

Permissive model license: The separate Nano checkpoint card declares MIT. Use the documented nano configuration and authorized references; do not substitute Turbo audio as evidence of Nano quality.

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

Before you choose: Uses the Turbo class with nano=True. Performance depends on CPU and thread count.

No comparable hardware benchmark verified. Check the official setup for your device.

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

Compare with similar

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NeuTTS AirListen side-by-side →Pocket TTSListen side-by-side →MOSS-TTS NanoListen side-by-side →

Choose an alternative to hear both models together.

Voices

1 voice
Female
Bella referencedefault
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 Nano

pip install chatterbox-tts

Sources & setup details

Chatterbox Nano FAQ

Do I need a GPU to run Chatterbox Nano?

Chatterbox Nano supports CPU inference. Speed depends on your processor, runtime, and text.

Can Chatterbox Nano clone voices?

Yes — Chatterbox Nano supports voice cloning from reference audio.

What license is Chatterbox Nano released under?

Chatterbox Nano 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 Nano support?

Chatterbox Nano supports English.

Is there a hosted Chatterbox Nano API?

OpenSpeech Cloud is accepting production-access interest for Chatterbox Nano, but this model is not currently hosted in Cloud. Use the official repository for current deployment options.